A Giannopoulos

Laiko Hospital, Athínai, Attica, Greece

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Publications (121)243.72 Total impact

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    ABSTRACT: The overall success-rate of the two-stage treatment plan for the treatment of super-morbid obesity has not yet been assessed. We reviewed the long-term results of 41 treated super-morbid-obese patients. Mean initial BMI was 59.5 ± 3.5 kg/m(2). Twelve patients (29.3 %) achieved after only LSG a BMI <35 kg/m(2) (mean 31.9 ± 2). They have lost 78.7 ± 11.8 % of excess body weight (EBW). The remaining 28 patients lost 48.1 ± 11.9 % of EBW and achieved a mean BMI of 44.2 ± 4.3 kg/m(2), thus requiring the second stage. Ten of them (24.4 % of the total or 35.7 % of those in need), were submitted to laparoscopic Roux-en-Y gastric bypass (LRYGBP). They lost 71.9 ± 4.3 % of EBW and have a mean BMI of 33.6 ± 2.7 kg/m(2). The 18 remaining patients have a BMI of 42 ± 3.6 kg/m(2) and they still suffer from morbid obesity. They have lost 48.5 ± 8.7 % of EBW. The mean rate of EBW loss for all the available 39 patients after either LSG or both LSG and LRYGBP has been 63.2 ± 16.5 % after a mean follow-up of 42.8 ± 19.5 months. Out of 41 patients, 1 died, 1 was lost to follow-up, 21 (51.2 %) achieved "healthy" BMIs and 18 (44 %) still require LRYGBP. The rate of cure of morbid obesity was 51.2 %. A remaining 44 % of super-morbid obese patients still need the completion LRYGBP but have not undergone it. Half of these patients have lost >50 % of their EBW. The two-stage strategy is an effective treatment plan for super-morbid obesity. A less patient-dependent strategy may be needed for a subset of patients.
    Obesity Surgery 07/2012; 22(10):1623-8. · 3.10 Impact Factor
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    ABSTRACT: This is an experimental study regarding the positive effect of recombinant human activated protein C (rhAPC) in the healing process of partial-thickness burns, in comparison to antithrombin III and heparin. On a porcine model we induced superficial partial-thickness and deep partial-thickness burns and performed intravenous administration of the elements of study during the first 48 h. The progress of the condition of the injured tissues was evaluated by histopathological examination at specific time intervals. The results showed an improved healing response of the specimens treated with rhAPC compared to those treated with antithrombin III, heparin, and placebo.
    Annals of burns and fire disasters. 06/2012; 25(2):66-73.
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    ABSTRACT: Toll-like receptor 4 (TLR4) has been recently implicated in inflammatory pathways involved in carotid plaque destabilization. Given that statins have plaque stabilization and inflammation reduction effects, we investigated whether TLR4 expression on carotid atherosclerotic plaques correlates with statin intake. Carotid atherosclerotic plaques were obtained on 140 patients (preoperative statin intake, n = 70). TLR4 immunohistochemical expression was investigated in endothelial cells (ECs), macrophages (MACs) and smooth muscle cells (SMCs) of carotid atheroma. TLR4 positivity, over-expression and intensity of immunostaining were compared in statin versus no-statin users. The results of this study showed that statin users had a significantly lower expression of TLR4 in ECs (P = 0.02, 0.001, 0.006 for TLR4 positivity, increased intensity and over-expression, respectively). Similarly, TLR4 positivity was less pronounced in carotid plaque MACs of statin users (P = 0.03). No carotid specimen with increased EC TLR4 intensity or over-expression was observed among statin users. The prevalence of any cerebrovascular accident was 61.4% in the 'no statin' versus 18.6% in the 'statin' group (odds ratio for statin use: 0.14, 95% CI: 0.07-0.31, P < 0.001). In conclusion, statin treatment is associated with attenuated TLR4 expression on human carotid atherosclerotic plaques and a reduced risk of carotid-related cerebrovascular events. TLR4 may potentially mediate statins' plaque stabilization effects. Further investigation is necessary.
    Vascular 09/2011; 19(6):320-6. · 0.86 Impact Factor
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    ABSTRACT: Laparoscopic sleeve gastrectomy (LSG) is used with increasing frequency for the treatment of morbid obesity. The application of robotic techniques has been reported for bariatric operations like laparoscopic Roux-en-Y gastric bypass and laparoscopic adjustable gastric banding, but not for LSG. We report herein our initial experience with LSG performed with the use of the Da Vinci surgical system. Nineteen consecutive patients underwent LSG with the use of the Da Vinci surgical system by the same surgical team. Surgical techniques followed the principles of standard LSG. Preparation of the stomach was performed by the console surgeon and its division with the staplers by the patient-side surgeon. Seventeen women and two men with a mean age of 39.4 years and a mean body mass index (BMI) of 48.2 kg/m(2) were operated. Mean operative time was 95.5 ± 11.5 min. Docking time was 16 ± 4.2 min. There were no conversions. Peri-operative morbidity and mortality was zero. Time to BMI ratio for robotic LSG was 2 ± 0.3 min/kg/m(2) and it was equal to the respective of our standard LSGs. When the docking time was excluded, the same ratio was 1.7 ± 0.2, significantly shorter than the respective 2.0 ± 0.5 of our conventional LSGs (p = 0.018). Mean excess body weight loss 1 year post-operatively was 65.5 ± 25.6%. Robotic laparoscopic sleeve gastrectomy is a feasible, safe, and efficient surgical technique for the treatment of morbid obesity and it does not add to the operating time of the procedure.
    Obesity Surgery 08/2011; 21(8):1172-9. · 3.10 Impact Factor
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    ABSTRACT: We present the case of a patient with two tumors in his left kidney and a synchronous colon cancer. While coexisting tumors have been previously described in the same kidney or the kidney and other organs, or the colon and other organs, to the best of our knowledge no such concurrency of three primary tumors has been reported in the literature to date. A 72-year-old man of Greek nationality presenting with pain in the right hypochondrium underwent a series of examinations that revealed gallstones, a tumor in the hepatic flexure of the colon and an additional tumor in the upper pole of the left kidney. He was subjected to a right hemicolectomy, left nephrectomy and cholecystectomy, and his postoperative course was uneventful. Histopathology examinations showed a mucinous colon adenocarcinoma, plus two tumors in the left kidney, a papillary renal cell carcinoma and a chromophobe renal cell carcinoma. This case underlines the need to routinely scan patients pre-operatively in order to exclude coexisting tumors, especially asymptomatic renal tumors in patients with colorectal cancer, and additionally to screen concurrent tumors genetically in order to detect putative common genetic alterations.
    Journal of Medical Case Reports 04/2011; 5:134.
  • 12η Πανελλήνια Επιστημονική Συνάντηση Ελληνικού Κολλεγίου Χειρουργών, Amalia Hotel, Καλαμπάκα; 01/2011
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    ABSTRACT: Laparoscopic Roux-en-Y gastric bypass (RYGBP) for morbid obesity is a challenging operation. The application of robotic techniques has been shown to ease the technical difficulties and reduce perioperative morbidity, mainly because it facilitates the construction of the gastrojejunal anastomosis (GJ). Robotic laparoscopic RYGBP (LRYGBP) has been reported either as totally robotic with manual suturing of the GJ or as robotically assisted with the use of the robot only for the construction of the GJ. A totally robotic LRYGBP with a combined stapled and manual GJ has never been reported. Nine consecutive patients underwent totally robotic LRYGBP. The GJ was fashioned with a combination of the linear stapler and manual suturing. Mean preoperative body mass index was 45.3 ± 4.7 kg/m(2). In 1 case, we had to undock the Da Vinci Surgical System at the time of the jejunojejunostomy due to unfavorable ergonomics. Mean time to dock the robot was 16.3 ± 3.3 minutes, whereas mean total operative time was 197.2 ± 12.3 minutes. Immediate postoperative morbidity and mortality equaled zero. One patient developed a stenosis of the GJ amenable to endoscopic dilatation. The mean excess weight loss rate 1-year postoperative was 79% ± 15%. Totally robotic LRYGBP can duplicate precisely any conventional technique without any compromise in operative time, short- or long-term results.
    Journal of Laparoendoscopic & Advanced Surgical Techniques 10/2010; 20(10):797-801. · 1.07 Impact Factor
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    4o Συνέδριο Ελληνικού Κολλεγίου Χειρουργών 2010, Αθήνα, Ξενοδοχείο Divani Caravel; 04/2010
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    ABSTRACT: Carcinoid tumors of the extrahepatic biliary tree are extremely rare malignancies, accounting for 0.2%-2% of all gastrointestinal carcinoid tumors, while carcinoids of the cystic duct are an uncommon entity and an extremely unusual cause of bile duct obstruction. After an extensive literature review, we retrospectively analysed 61 cases of carcinoid tumor of the biliary tree as well as one additional case of a 60-year-old female with symptoms and laboratory/imaging examination findings compatible with those of a malignant biliary tract obstruction. At laparotomy, resection of the gallbladder and common bile duct was performed. Histological study revealed a well-differentiated neuro-endocrine carcinoma of the cystic duct. The patient remained disease-free at 16 months. Our presentation is the seventh case reported in the world literature. Compared to cholangiocarcinoma, analysis of the reviewed group indicates an increased incidence of extrahepatic carcinoid tumors in younger persons along with a slight female predominance. Statistically, the most common anatomic location is the common bile duct, followed by the perihilar region and the cystic duct. Jaundice is the most common finding. Curative surgery was realized in the majority of cases and long-term disease-free survival was achieved when surgery was curative. Carcinoid tumors obstructing the biliary tree are extremely difficult to diagnose preoperatively, and nearly impossible to differentiate from non-neuroendocrine tumors. As surgery offers the only potential cure for both biliary carcinoids and cholangiocarcinoma, we recommend aggressive surgical therapy as the treatment of choice in every case of potentially resectable biliary tumor.
    Hepatobiliary & pancreatic diseases international: HBPD INT 12/2009; 8(6):640-6. · 1.26 Impact Factor
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    ABSTRACT: There is no standard treatment for breast cancer patients whose tumors have been exposed both to anthracyclines and taxanes. Oxaliplatin shows synergism with 5-fluorouracil (5-FU) and capecitabine is an oral prodrug of 5-FU with known efficacy in pretreated patients. This phase II trial studied the efficacy and toxicity of the oxaliplatin-capecitabine combination as salvage treatment in breast cancer patients pretreated with anthracyclines and taxanes. Patients received oxaliplatin 80 mg/m(2) on day 1 followed by oral capecitabine 1800 mg/m(2) divided in two doses for 7 days every two weeks for a maximum of twelve courses or until disease progression. Twenty-eight patients were evaluable for efficacy and toxicity. Objective responses (all partial) were documented in 9 patients [32%; 95% confidence interval (CI): 13-51.2%]. Responses were documented at all metastatic sites. The median response duration was 5 months (range 3-9), median time to progression was 4.5 months (range 2-10) and median overall survival was 10 months (range 2-18). Myelotoxicity was minimal with grade 3 thrombocytopenia as the main toxicity. Hand-foot syndrome was well tolerated. The present regimen was well tolerated with a rather moderate effectiveness but very significant for this group of patients. Further studies where the combination could be compared with single agent capecitabine are warranted.
    Anticancer research 08/2009; 29(7):2851-6. · 1.71 Impact Factor
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    ABSTRACT: The role of combination chemotherapy regimens in the management of ovarian cancer patients with tumors previously exposed to platinum compounds and paclitaxel has not yet been defined. The present phase II study evaluated the activity and toxicity of a gemcitabine-ifosfamide-cisplatin combination in the aforementioned group of patients. Given the in vitro and in vivo synergism between the three agents, it was believed that using a three-drug combination would overcome tumor resistance to cisplatin. Twenty-four patients were enrolled in the study. The median age was 56 years and the median performance status 1. Eight (34%) had potentially platinum-sensitive, 6 (24%) had primary platinum-resistant and 10 (42%) patients had secondary platinum-resistant tumors. Treatment consisted of gemcitabine 1 g/m(2) i.v. on days 1 and 8, cisplatin 75 mg/m(2) i.v. over 2 h fractionated over days 8 and 9, and ifosfamide 5 mg/m(2) i.v. over 1 h fractionated on days 8-9 with mesna uroprotection. Courses were administered every 3 weeks on an outpatient basis. Granulocyte colony-stimulating factor (G-CSF) was given at a dose of 5 microg/kg/day on days 10-14. A median of 4 cycles were administered with the delivered dose intensity at 85% of the planned dose for the three agents. Among 24 patients evaluable for response and toxicity, there were 8 partial responses with a response rate of 33% (95% confidence interval 16.4-55%). Stable disease was recorded in 6 (25.7) and progressive disease in 10 (42%) patients. Subgroup analysis revealed a response rate of 50% in potentially platinum-sensitive, 16.5% in primary platinum-resistant and 30% in secondary platinum-resistant tumors. The median response duration was 5 months (range 3-12 months), the median time to progression 6 months (range 3-16 months) and the median survival 12 months (range 3-24 months). Myelotoxicity was significant, with neutropenia grade 3 and 4 occurring in 35% and 20% of patients, respectively. Four episodes (3.5% of all cycles) of febrile neutropenia were documented and were well managed with oral antibiotics and G-CSF continuation until complete recovery. Grade 1, 2 and 3 peripheral neuropathy developed in 40%, 30%, and 10% of patients, respectively. The three-drug combination demonstrated a significant effectiveness in potentially platinum-sensitive tumors and a moderate efficacy in platinum-resistant tumors. The regimen, although myelotoxic, is tolerable with G-CSF support. Further investigation via comparative studies is required to define any superiority of the present regimen over doublets of the three agents in this group of patients.
    Anticancer research 08/2009; 29(7):2681-6. · 1.71 Impact Factor
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    ABSTRACT: The aim of this study was to assess the prevalence of common ear, nose or throat (ENT) conditions presenting to emergency departments that could be managed by a primary healthcare system Method: Between January 2001 and January 2006 a total of 33 792 patients attended the ENT emergency department of one hospital. All cases were included in this retrospective study. The registry of ENT emergency department was analysed; age, sex and clinical diagnosis were tabulated. All patients were evaluated by a specialist. Classification of the cases was based on the main symptom seeking care. A total of 33 792 patients visited the otorhinolaryngology emergency department. Of these, 17 775 patients (52.6%) were men and 16 017 (47.4%) were women. Over 40% of the cases were classified in eight major groups of diagnosis. Acute tonsillitis (12.5%) and acute pharyngitis (11.4%) followed by acute otitis externa (5.9%) were the most common causes of all ENT emergency department visits. The admission rate was 1.2 % and only 0.6% (84) of patients were referred to other specialties. Most common ENT disorders presenting to the emergency department in Greece could be managed at the level of primary health care. Incorporating ENT expertise into educational and training programmes of general practitioners may be successful in managing ENT problems in primary care in future.
    Quality in primary care 02/2009; 17(2):145-8.
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    ABSTRACT: Oxaliplatin has become one of the major cytotoxic agents for the treatment of gastrointestinal tumors. As a result, several cases of the so-called oxaliplatin-associated hypersensitivity reaction have been documented. We have retrospectively evaluated and characterized these reactions in our patient group by reviewing the files of 1,224 patients exposed to an oxaliplatin-containing regimen in order to provide useful clinical information for diagnosis and management. Three hundred and eight (308) patients who have never been exposed to platinum compounds developed symptoms compatible with a reaction to oxaliplatin that was verified by manifestation of at least similar symptoms on rechallenging. The reactions occurred after the first 5 courses, with a median course number of 9 (range 1-24). These reactions could be distinguished as (1) mild reactions occurring in 195 (63%) patients manifesting with itching and small area erythema either during treatment or within the next hours, and (2) severe reactions occurring in 113 (37%) patients within minutes of drug infusion manifesting with diffuse erythroderma, facial swelling, chest tightness, bronchospasm and changes in blood pressure. Oxaliplatin withdrawal was not required in patients with a mild reaction. Forty-eight (42%) patients having a severe reaction with appropriate premedication and prolongation of the infusion duration could tolerate 2-4 subsequent courses. For the remaining 65 (58%) patients, oxaliplatin withdrawal was inevitable because of the very severe reactions occurring on rechallenging. In addition, 3 patients presented with thrombocytopenia and 3 others with hemolytic anemia, all reversible upon oxaliplatin discontinuation. Hypersensitivity reactions to oxaliplatin are underestimated. Although the reactions are not frequent during first courses, in extensively pretreated patients, they may become a serious problem. In the majority of patients, drug discontinuation might not be necessary. In patients manifesting a severe reaction, re-exposure to oxaliplatin should be considered only if the patient can tolerate the reaction and there has been clinical benefit from this therapy. Physicians and nursing staff should be aware of the risk and be well prepared.
    Oncology 01/2009; 76(1):36-41. · 2.17 Impact Factor
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    ABSTRACT: The current cluster of avian influenza outbreaks in birds has occurred in areas where humans live in proximity to poultry. Dissemination of accurate information may be the cornerstone for proper community preparation. In the herein presented study, we attempted to asses the information level among Greek children regarding avian flu. A descriptive study was carried out in 2006 in ten Greek prefectures to determine the information level among students about transmission ways, symptoms and prevention measures of avian flu. A total of 1400 Greek students participated in the study. Approximately 75% of the students reported to know what bird flu is and 53% reported to know that there has been at least one case of avian flu in Greece. More than half (55.6%) reported that an effective vaccine against avian flu does exist; of the students asked, 47% reported that avian flu can be transmitted from human to human whereas 21.4% believed that humans can suffer from avian flu. Media contribution in providing information was very high among students. The level of information about avian flu among Greek students was found inadequate especially in some questions regarding serious aspects of avian flu. This study highlights the need for adaptation of health programs in Greek schools, which should include the provision of accurate information.
    Southern medical journal 12/2008; 101(11):1121-5. · 0.92 Impact Factor
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    ABSTRACT: A past history of sporadic solid cancers is disclosed in 10% of gastrointestinal stromal tumor (GIST) patients. Simultaneous occurrence with other malignancies is encountered in 14 to 16%, but the synchronous occurrence of GIST and hepatocellular carcinoma (HCC) has been reported only once in the English literature. An 81-year-old male patient is presented with a preoperatively known HCC, in whom a synchronous small nodular omental GIST adjacent to the lesser curvature of the stomach was incidentally discovered. When a GIST is encountered, a thorough intraoperative investigation of the abdominal cavity currently remains the only reliable method for detection of a possible coexisting malignancy.
    Southern medical journal 10/2008; 101(9):948-51. · 0.92 Impact Factor
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    ABSTRACT: Significant renal artery stenosis (RAS) in a solitary functioning kidney (SFK) represents one of the most acceptable indications for renal revascularization. Percutaneous transluminal renal artery stenting (PTRAS) is increasingly being used as a first line treatment for renal revascularization, associated with renal function improvement or stabilization in the majority of the patients with solitary kidneys, but also with deterioration in up to 38% of the cases. Atheroembolism during PTRAS has been postulated as a potential cause for this acute renal function worsening. The aim of this study was to report on the feasibility, safety, and early outcomes of PTRAS in a series of patients with SFK using distal embolic protection (DEP). All PTRAS procedures in SFKs performed under DEP between June 2002 and September 2007 were reviewed. Renal function, blood pressure, and the number of anti-hypertensive medications were assessed pre- and post-intervention. Renal function improvement and deterioration were defined as a 20% increase and decrease in serum creatinine, respectively, compared with preoperative values. Primary and primary assisted patency rates were also calculated. Statistical differences between values before and after intervention were determined by the Student t test and statistical significance was taken at P < .05. Protected PTRAS was performed in 14 patients with a SFK (9 men, 6 women, mean age 65.6 +/- 6.8 years). All patients were hypertensive and had varying degrees of azotemia. Mean pre-intervention stenosis degree was 86.8% +/- 7.8%. Immediate technical success was obtained in 100% of the patients. Renal function was cured (7.1%), improved (50%), or stabilized (42.9%) in all 14 (100%) patients after the procedure and no deterioration was noticed in any patient at 6-month follow-up. Pre- and postintervention serum creatinine levels were 3.01 +/- 1.15 mg/dL and 2.16 +/- 0.68 mg/dL, respectively, (P = .02). Hypertension was improved in 6 (42.9%) patients and stabilized in the remaining 8 (57.1%). Primary patency was 100% and 90% at 1 and 3 years, respectively, while primary assisted patency remained 100% for the whole follow-up period (mean, 31.8 +/- 19.4 months). These findings suggest that in patients with a SFK, protected PTRAS represents a safe and effective treatment for halting the progression of renal dysfunction to renal loss and warrants further investigation.
    Journal of vascular surgery: official publication, the Society for Vascular Surgery [and] International Society for Cardiovascular Surgery, North American Chapter 10/2008; 48(6):1414-22. · 3.52 Impact Factor
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    ABSTRACT: The aim of this study was to investigate the interaction between the endothelin-1 (ET-1) and inducible NO synthase (iNOS) in anastomotic healing. The expression of ET-1 and iNOS were investigated by immunohistochemistry in a rat end-to-end arterial anastomotic model. The aorta of 50 male Wistar rats was exposed, then transversely divided and re-anastomosed. The animals were sacrificed immediately after the operation (group A, control group), after 24 h (group B), on 7th postoperative day (group C), on 30th day (group D) and at 6 months (group E). Intima and media thickness and their ratio of the anastomotic segments in each group were calculated from computer digitized images of the individual sections. ET-1 and iNOS expression were measured on a semiquantitative scale ranging from 0 to 3. ET-1 was expressed from endothelial and smooth muscle cells (SMCs), while iNOs was expressed from SMCs and inflammatory cells. An intense expression of ET-1 was demonstrated mainly at 1 week and to a lesser degree at 1 month. Yet, at 6 months this expression was significantly weakened (P<0.001). In contrast, an intense iNOS expression was identified at 24 h, substantially regressing at statistical significant lower levels after 1 week (P<0.001). Bivariate correlation test showed a positive correlation between ET-1 and iNOS expression. ET-1 appears to play an important role in intimal thickening during anastomotic healing, especially in the late period of the process. Although there is a positive correlation between ET-1 and iNOS production, the activity of the latter is relatively limited after the first postanastomosis week.
    International angiology: a journal of the International Union of Angiology 08/2008; 27(4):302-6. · 1.46 Impact Factor
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    ABSTRACT: The aim of this study was to evaluate the safety and effectiveness of percutaneous cholecystostomy without interval cholecystectomy as definitive treatment for acute cholecystitis in elderly or critically ill patients with various coexisting diseases who were unfit for surgery under general anesthesia. Between July 2004 and June 2006, 24 consecutive elderly and critically ill patients unfit for surgery, suffering from acute cholecystitis, and in whom significant comorbid factors were present, underwent percutaneous cholecystostomy as an emergency procedure at Laiko General Hospital. The diagnosis and the severity of acute cholecystitis were based on the Tokyo Guidelines, whereas the American Society of Anesthesiologists' (ASA) physical status classification was used for the perioperative risk stratification for cholecystectomy. There were 14 male and 10 female patients with a median age of 79 years. Acute cholecystitis was classified as grade 2 in 20 patients and as grade 3 in 4 patients; 17 patients were classified as ASA score III and 7 as ASA score IV, whereas a total of 52 comorbid factors were present. Gallstones were disclosed as the underlying etiology in 23 patients, whereas one patient was diagnosed as suffering from acalculous cholecystitis. Percutaneous cholecystostomy was technically feasible in all patients (100%). Clinical improvement was noticed in 14 patients within 24 hours and in all patients within 72 hours. Statistically significant reduction in the values of white blood cells, C-reactive protein, and axillary body temperature were observed within 72 hours. The procedure-related mortality was 4%, whereas within a median follow-up of 17.5 months, definitive and effective control of symptoms was achieved in 90.5% of the patients. For the subgroup of extremely high-risk and unfit for surgery patients, percutaneous cholecystostomy might be considered as the definitive treatment since it controls the local symptoms and the systemic inflammatory response.
    Southern medical journal 07/2008; 101(6):586-90. · 0.92 Impact Factor
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    ABSTRACT: The aim of this study was to evaluate the outcome in patients with liver cirrhosis who underwent laparoscopic cholecystectomy for symptomatic gallstone disease. Retrospective analysis of prospectively collected data of 34 patients operated between March 1998 and April 2006. There were 19 male and 15 female patients with a median age of 62 years. Cirrhosis aetiology was viral hepatitis in 25 patients, alcohol in 6, primary biliary cirrhosis in 2 and in 1 patient the cause was not identified. Twenty-three were classified as Child-Pugh-Turcotte stage A and 11 as Child-Pugh-Turcotte stage B. The median Model For End-Stage Liver Disease score was 12. Median operating time was 96 min. In three patients there was conversion to open cholecystectomy. Postoperatively, one patient died and six more patients had complications. Median postoperative stay was 3 days. Patients with acute cholecystitis did not have increased morbidity, but had significantly longer hospital stay. Laparoscopic cholecystectomy can be carried out with acceptable morbidity in selected patients with well-compensated Child A and B stages liver cirrhosis. Patients with evidence of significant portal hypertension and severe coagulopathy should avoid surgery.
    ANZ Journal of Surgery 06/2008; 78(5):363-5. · 1.50 Impact Factor
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    ABSTRACT: E2F-1 expression is positively associated with tumour growth in oesophageal squamous-cell carcinomas (OSCC), while it exhibits oncosuppressive features in colonic adenocarcinomas (AC). To date there are no data regarding E2F-1 expression and its relationship with tumour kinetics (proliferation, apoptosis) in adenocarcinomas that develop on Barrett oesophagus. As oesophageal adenocarcinomas occur almost exclusively in the metaplastic Barrett epithelium and the opposing E2F-1 behaviour seems to be cell and tissue-type dependent, we examined the manner in which E2F-1 acts in ACs of Barrett oesophagus. We estimated the immunohistochemical expression of E2F-1, Ki-67, caspase-3 and p53 immunohistochemical status in 35 Barrett oesophagus ACs. E2F-1 immunopositivity correlated inversely with Ki-67, by semi-serial section and statistical analysis (p = 0.023, Spearman correlation). Semi-serial section analysis revealed a direct association between E2F-1 and caspase-3 staining. No correlation was found with p53 status. Cases with higher E2F-1 immunoexpression exhibited longer survival (p = 0.047, Cox-regression). E2F-1 expression was negatively related to tumour proliferation in ACs of Barrett oesophagus. Additionally, E2F-1 immunohistochemical status correlated positively with patient survival. These findings are opposite from those seen in OSCCs, suggesting that the tumour-suppressing E2F-1 behaviour in oesophageal adenocarcinomas is possibly due to the intestinal-type nature of the metaplastic Barrett mucosa.
    Journal of clinical pathology 06/2008; 61(5):601-5. · 2.43 Impact Factor

Publication Stats

721 Citations
243.72 Total Impact Points

Institutions

  • 1989–2010
    • Laiko Hospital
      • • First Department of Surgery
      • • Department of Radiology
      Athínai, Attica, Greece
  • 2000–2009
    • National and Kapodistrian University of Athens
      • • Faculty of Medicine
      • • Division of Surgery I
      • • Division of Pathophysiology
      • • Division of Urology I
      Athens, Attiki, Greece
  • 1978–2008
    • Athens State University
      Athens, Alabama, United States