Publications (17)23.26 Total impact
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Article: Monoclonal antibodies in gastrointestinal cancers.
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ABSTRACT: Introduction: Among gastrointestinal cancers, colorectal and gastric neoplasms are the most frequent. The development of new targeted drugs improved the efficacy of systemic therapy in advanced stages of those malignancies. Areas covered: This review highlights the main biological processes implicated in gastrointestinal cancer development and progression, such as angiogenesis and epidermal growth factor receptor (EGFR) signaling pathway. On these bases, anti-EGFR and anti-vascular endothelial growth factor (VEGF) monoclonal antibodies in colorectal and gastric cancer are discussed. Data about further monoclonal antibodies in development are also reported. Expert opinion: The use of monoclonal antibodies in colorectal and gastric cancers showed the best outcomes when combined with chemotherapy, even though single agent anti-EGFR antibodies seem active in particular setting of metastatic colorectal cancer (CRC) patients. It is not well defined whether the addition of anti-VEGF and anti-EGFR to chemotherapy could improve outcome in those patients susceptible to CRC-related metastases resection. Little and conflicting data are available about the role of these drugs in adjuvant setting. Tests are available to select patients with higher probability to get benefit from these treatments. Further biomarkers need to be evaluated to improve this selection and achieve "tailorization" of systemic therapy.Expert opinion on biological therapy 02/2013; · 3.22 Impact Factor -
Article: The role of microRNAs in cancer: diagnostic and prognostic biomarkers and targets of therapies.
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ABSTRACT: INTRODUCTION: miRNAs are noncoding RNAs that target specific mRNA with subsequent regulation of particular genes, implicated in various biological processes. In cancer, miRNAs could show a different expression from normal tissues. miRNAs have a role as oncogenes when they target tumor suppressor genes and similarly they are tumor suppressors when they target oncogenes. AREAS COVERED: In this review, areas covered include the role of miRNAs in cancer diagnosis, prognosis and research for achievement of therapeutic strategies implicating miRNAs in oncology. As biogenesis of miRNAs is fundamental to understand their usefulness, this has also been discussed. Both miRNA expression profiles in cancer tissues and miRNA levels in peripheral blood were studied for improvement in the management of cancer patients. EXPERT OPINION: miRNAs have the potential for better understanding of tumor biology, but could also provide clinical advancement in management and therapy of various malignancies. The possibility of miRNA detection in peripheral blood would allow an eager expansion of their application in various clinical settings for cancer. The applicability of miRNA expression profiles still needs to be defined.Expert opinion on therapeutic targets 03/2012; 16 Suppl 2:S103-9. · 3.72 Impact Factor -
Article: Columnar-lined esophagus CK7 positive is an early marker of gastroesophageal reflux disease.
The American journal of surgical pathology 05/2011; 35(5):773; author reply 773-4. · 4.06 Impact Factor -
Article: Local neck symptoms before and after thyroidectomy: a possible correlation with reflux laryngopharyngitis.
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ABSTRACT: Local symptoms in the neck such as swallowing and voice disorders, and throat discomfort might be related to a goiter if present, but are also reported by patients suffering from reflux laryngopharyngitis. The aim of our study was to investigate the presence of reflux laryngopharyngitis in patients with nodular goiter before and after uncomplicated total thyroidectomy (TT) using a prospective study in University Hospital setting. We considered 25 patients, affected by non-toxic nodular goiter and candidates for TT, who complained of local symptoms in the neck. All the patients were carefully interviewed, with emphasis on swallowing and voice disorders, throat discomfort and reflux-related symptoms and underwent a videolaryngoscopy (VLS) and a videofluoroscopic swallowing study (VFSS) before and 3 months after TT. Before thyroidectomy, reflux laryngopharyngitis-related alterations were present in 68 and 50% at VLS and VFSS, respectively. After thyroidectomy, the swallowing and voice disorders persisted in 79 and 75%, respectively, while throat discomfort persisted in 91%. The results show that patients with a non-toxic nodular goiter who complain of local neck symptoms, before surgery it is appropriate to see if a reflux laryngopharyngitis is present; VLS and VFSS could be indicated for this and if necessary an antireflux treatment should be administered.Archives of Oto-Rhino-Laryngology 10/2010; 268(5):715-20. · 1.29 Impact Factor -
Article: A minor modification of Lichtenstein repair of primary inguinal hernia: postoperative discomfort evaluation.
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ABSTRACT: The aim of this study was to evaluate the usefulness of a modification of the Lichtenstein hernioplasty procedure by evaluating its impact on postoperative discomfort. From December 1999 to May 2006, the Lichtenstein inguinal hernioplasty was performed in 406 patients with noncomplicated unilateral inguinal hernia. During reconstruction, the mesh was fixed to the inguinal canal floor without stitching its upper margin to the internal oblique muscle. Control of postoperative pain proved to be satisfactory; 72 hours after surgery, 26.1 per cent of patients no longer felt any pain, whereas 54.4 per cent had slight pain without the need for painkillers; on Day 7, 92.8 per cent felt no pain at all. After 10 days, 86.7 per cent of those with sedentary jobs were able to return to work, whereas 79.1 per cent of those with heavier jobs resumed work in 11 to 15 days. Our modification of the original Lichtenstein procedure permitted us to obtain satisfactory results with regard to the control of postoperative chronic pain and a rapid reprisal of normal working activity.The American surgeon 07/2010; 76(7):764-9. · 1.28 Impact Factor -
Article: Accuracy of the water-siphon test associated to barium study in a high prevalence gastro-oesophageal reflux disease population: a novel statistical approach.
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ABSTRACT: Gastro-oesophageal reflux disease (GORD) is 'a condition which develops when the reflux of gastric content causes troublesome symptoms or complications'. Instrumental diagnostic tests generally used for GORD are 24-hour pH-metry and upper gastrointestinal (GI) endoscopy but barium study associated with provocative manoeuvres such as the water-siphon test (WST), has also been used for GORD. The aim of this paper was to estimate the accuracy of several tests in patients with GORD in a tertiary care setting, focusing on WST, which is rapid and non-invasive, simple to perform and well-tolerated by patients. A total of 172 consecutive patients, symptomatic for reflux referred to a tertiary medical centre, were considered and data regarding the WST, 24-hour pH-metry, upper GI endoscopy with histology were analysed using latent class analysis, a multivariable statistical method for estimating the accuracy of tests when a gold standard is not available. The overall proportion of GORD in the sample was estimated at 0.664 [95% confidence interval (CI) = (0.589; 0.731)]. WST proved to be the most sensitive [Se = 0.886; 95% CI = (0.688; 1.000)] compared with pH-metry [Se = 0.620; 95% CI = (0.493; 0.745)] and endoscopy with histology [Se = 0.534; 95% CI = (0.273; 0.789)]. It was less specific [Sp = 0.537; 95% CI = (0.003; 1.000)] than pH-metry [Sp = 0.547; 95% CI = (0.281; 0.813)], and even less than endoscopy with histology [Sp = 0.862; 95% CI = (0.495; 1.00)]. Positive predictive values were estimated at 0.792 [95% CI = (0.721; 0.862)] for WST, 0.731 [95% CI = (0.643; 0.819)] for pH-metry and 0.886 [95% CI = (0.811; 0.961)] for endoscopy with histology. Negative predictive values were estimated at 0.707 [95% CI = (0.573; 0.841)] for WST, 0.422 [95% CI = (0.310; 0.534)] for pH-metry and 0.484 [95% CI = (0.387; 0.581)] for endoscopy with histology. Water-siphon test might possibly be useful in patients with suspected GORD because it is highly sensitive and predictive. A positive outcome of the WST associated with a barium study can certainly justify upper GI endoscopy and support any pharmacological treatment of GORD.Journal of Evaluation in Clinical Practice 04/2010; 16(3):550-5. · 1.23 Impact Factor -
Article: Keratin 7 expression as an early marker of reflux-related columnar mucosa without intestinal metaplasia in the esophagus.
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ABSTRACT: The role of Barrett esophagus in carcinogenesis is widely accepted, but the significance of esophageal columnar mucosa without histological intestinal metaplasia, known as columnar-lined esophagus, is debated. We studied 128 patients free of Helicobacter pylori with reflux-related symptoms and columnar mucosa in the esophagus at endoscopy, 106 patients with Barrett esophagus (referred to as the Barrett group) and 22 patients without intestinal metaplasia (columnar group). Samples from 20 subjects free of H. pylori were used as controls. Immunostaining for keratin 7 (KRT7), keratin 20 (KRT20), caudal type homeobox 2 (CDX2), mucin 2, oligomeric mucus/gel-forming (MUC2), and tumor protein p53 (TP53) was assessed. Samples taken 1 cm above the gastroesophageal junction showed KRT7 staining in all cases in the Barrett and columnar groups and none in the control group. Immunostaining for TP53 was absent in the control group, and more frequent in the columnar group (7, 31.8%) compared with the Barrett group (14, 13.2%, P=0.033). In the columnar group, low grade dysplasia and TP53 expression was seen in 7 of 22 biopsy specimens (31.8%) at baseline and in 4 additional specimens after 2 years, for a total of 11 specimens (50.0%). The expression of KRT7 might help to explain the pathological, reflux-related nature of columnar-lined esophagus, as aberrant expression in a very early stage of the multistep Barrett esophagus progression. Expression of KRT7 may occur in basal glandular cells as a result of their multipotentiality and susceptibility to immunophenotype changes induced by reflux.Medical science monitor: international medical journal of experimental and clinical research 06/2009; 15(5):CR203-210. · 1.70 Impact Factor -
Article: Trans-visceral migration of retained surgical gauze as a cause of intestinal obstruction: a case report.
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ABSTRACT: A retained surgical sponge in the abdomen is uncommon although it is likely that this finding is underreported in the medical literature. The intravisceral migration of retained surgical gauze is even rarer, as demonstrated by the very few cases reported. Three years after undergoing anterior resection of the rectum, a 75-year-old man presented with symptoms of small bowel obstruction. Plain abdominal radiography and CT showed a radio-opaque marker; a foreign body was suspected, probably a piece of retained surgical gauze. An ileotomy of about 5 cm. was performed to confirm this diagnosis and remove the gauze. Although rare, retained gauze in the abdomen is a complication of surgery. The authors consider that this event may be more frequent than it appears from reports in the literature, probably because of its medico-legal implications. If all such cases were reported, it would be possible to estimate their exact number, classify the occurrence as a possible surgical complication and thus modify its medico-forensic consequences.Journal of Medical Case Reports 02/2008; 2:17. -
Article: Laser pressure catapulting (LPC): optimization LPC-system and genotyping of colorectal carcinomas.
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ABSTRACT: Genotype analysis is becoming more and more useful in clinical practice, since specific mutations in tumors often correlate with prognosis and/or therapeutic response. Unfortunately, current molecular analytical techniques often require time-consuming and costly steps of analysis, thus making their routine clinical use difficult. Moreover, one of the most difficult problems arising during tumor research is that of their cell heterogeneity, which depends on their clear molecular heterogeneity. SSCP analysis discriminates by means of aberrant electrophoresis migration bands, mutated alleles which may represent as little as 15-20% of their total number. Nevertheless, in order to identify by sequencing the type of alteration revealed by this technique, only the mutated allele must be isolated. The advent of laser microdissection is a procedure which easily solves these problems of accuracy, costs, and time. The aims of this study were to perfect the system of laser pressure catapulting (LPC) laser microdissection for the assessment of the mutational status of p53 and k-ras genes in a consecutive series of 67 patients with colorectal carcinomas (CRC), in order to compare this technique with that involving hand-dissection and to demonstrate that since the LPC system guarantees more accurate biomolecular analyses, it should become part of clinical routine in this field. The LPC-system was perfected with the use of mineral oil and the LPC-membrane. To compare the techniques of hand- and LPC-microdissection, alcohol-fixed, paraffin-embedded tissue from 67 cases of CRC were both hand- and laser-microdissected. In either case, dissected samples were analyzed by SSCP/sequencing and direct sequencing for k-ras and p53 gene mutations. LPC-microdissection made it possible to pick up mutations by direct sequencing or SSCP/sequencing, whereas hand-microdissection mutations were identified only by means of SSCP followed by sequencing; direct sequencing did not reveal any mutation. In the 67 patients examined by either method, 36% (24/67) showed p53 mutations, 32 of which identified. Seventy-eight percent (25/32) were found in the conserved areas of the gene, while 12% (4/32) were in the L2 loop, 50% (16/32) were in the L3 loop, and 12% (4/32) in the LSH motif of the protein. Moreover, of the 67 cases examined, 40% (27/67) showed mutations in k-ras, with a total of 29 mutations identified. Of these, 14 (48%) were found in codon 12 and 15 (52%) in codon 13. The modifications which we brought to the LPC system led to a vast improvement of the technique, making it an ideal substitution for hand-microdissection and guaranteeing a considerable number of advantages regarding facility, accuracy, time, and cost. Furthermore, the data obtained from the mutational analyses performed confirm that the LPC system is more efficient and rapid than hand-microdissection for acquiring useful information regarding molecular profile and can therefore be used with success in clinical routine.Journal of Cellular Physiology 03/2005; 202(2):503-9. · 3.87 Impact Factor -
Article: Digital cineradiographic study of swallowing in infants with neurologic disease. Our experience.
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ABSTRACT: The study is aimed at proposing the use of digital cineradiography in the evaluation of swallowing disorders in children affected by severe neurological or developmental disability, in order to correctly identify these conditions and provide therapeutic approaches that could solve their feeding problem, improve their nutritional conditions and decrease the risk of infections. In the period between March 2001 and July 2003, 12 children (8 males and 4 females), aged between 9 months and 13 years, (average 6.2 years), affected by severe neurological or psychomotor disorders were evaluated with digital cineradiography. This investigation was requested for recurrent pulmonary infections and/or dysphagia with weight loss. All the examinations were performed with radio-controlled equipment provided with a digital C arm. Using the above mentioned technique, in all 12 patients, it was possible to differentiate those with disorders of the oral and/or pharyngeal swallowing phase (9/12) from those without swallowing dysfunction (3/12). In 9/9 patients passage of contrast medium into the upper airways was observed during swallowing: in 2 of them this was limited to the laryngeal vestibule (sub-epiglottic penetration), while in 7/9 cases aspiration of contrast medium into the trachea (5/9) or into the right bronchus (1/9) or into both bronchi (1/9) was recorded. In one patient the aspiration decreased in the sequences acquired with hyperflexion of the head. In 3/9 patients we recorded the transition of contrast medium into the nasopharynx during swallowing caused by incomplete closing of the oropharyngeal isthmus by the soft palate. In 3/9 patients there was incomplete clearing of the pharynx with contrast medium deposition in glosso-epiglottic vallecules and in the pyriform sinuses; only in one case did this stagnation result in post-swallowing aspiration. More than one disorder was found in 5/9 patients, and one only in 4/9. On the basis of our preliminary data it is possible to conclude that the dynamic swallowing study with digital technique allows a clear-cut evaluation of the swallowing process with minimum discomfort for the patient. On the other hand, the technique exposes to the risk of ionizing radiation; however, in consideration of the important clinical and therapeutic implications and in agreement with the literature, we believe that the importance of the information provided by the technique outweighs the risks linked to radiations.La radiologia medica 05/2004; 107(4):286-92. · 1.44 Impact Factor -
Article: [Digital cineradiography of the pharynx and the oesophagus after total or partial laryngectomy].
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ABSTRACT: The aim of the present study is to report our experience using digital cineradiography to assess morphological and functional disorders of the pharynx in patients with prior partial or total laryngectomy. From March 2000 to October 2002, 21 patients (18 males and 3 females) with prior total laryngectomy (12 patients), total laryngopharyngectomy (2 patients) and partial laryngectomy (7 patients) were examined. A digital cineradiography with 12 frames/second acquisition was performed in all patients. In four patients the procedure was interrupted for massive barium aspiration, without cough (silent aspiration). In 17 patients standing in the left posterior oblique position and prone in the right posterior oblique position the oesophagus and oesophagogastric junction were also examined. The water siphon test was performed at the end of the procedure. Small boluses (10 ml) of liquid (60% w/v) and high-density (250% w/v) barium, barium paste (110% w/v), and solid meal (obtained spreading a dry biscuit with barium paste) were used. All patients with prior total laryngectomy and total laryngopharyngectomy showed morphological and functional disorders of the neopharynx: parapharyngeal diverticulum (2 cases), submandibular pouch (6 cases), fistulas (2 cases), lumen narrowing and post-surgical stenoses (2 cases), tumour recurrence (1 case), prominent cricopharynx (5 cases) and rhinopharyngeal reflux (4 cases). All patients with prior partial laryngectomy (7 cases) presented silent aspiration. Eleven patients had an oesophageal motility disorder, which was very serious in three of them with decrease in oesophageal clearing and barium retention in the oesophagus. Oesophagogastric junction evaluation showed hiatus hernia in six cases, two of them with associated gastro-oesophageal reflux. Digital cineradiography appears able to identify the organic and functional postoperative complications of patient treated with partial or total laryngectomy. A special swallowing study can suggest to the speech therapist the best compensatory mechanism for improving patient swallowing and therefore quality of life.La radiologia medica 10/2003; 106(3):169-77. · 1.44 Impact Factor -
Article: [Laparoscopic Nissen fundoplication and esophageal intestinal metaplasia: preliminary observations].
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ABSTRACT: The aim of this preliminary study conducted in a few cases was the retrospective evaluation of the effects of laparoscopic Nissen fundoplication on oesophageal intestinal metaplasia. Seventy-seven patients with hiatal hernia underwent digital videofluorography, endoscopy with biopsies, motility studies and 24-h oesophageal pH-monitoring. On the basis of the results of the diagnostic procedures and considering the patients' ages and response to proton-pump inhibitor treatment, 8 patients underwent laparoscopic Nissen fundoplication; in 5 cases intestinal metaplasia was present at histopathological examination. Two of these had Barrett's oesophagus at endoscopy and intestinal metaplasia was associated with low-grade dysplasia in both at histology; the other 3 did not present a columnar mucosa at endoscopy and 1 had low-grade dysplasia. In all 5 patients, at 1 year postoperative histopathological control, disappearance or decrease of metaplastic epithelium and regression of dysplasia were noted, with excellent results in terms of reflux symptoms at clinical control. On the basis of these preliminary data, it is our opinion that antireflux surgery is not only a suitable treatment in the management of Barrett's oesophagus but also has a favourable effect on intestinal metaplasia regression when a normal oesophageal mucosa is present.Chirurgia italiana 57(1):53-8. -
Article: [Digital videofluorography and esophageal achalasia: from diagnosis to follow-up].
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ABSTRACT: The aim of this retrospective study was to evaluate the use of digital videofluorography in the preoperative and postoperative management of esophageal achalasia surgical treatment. From 1990 to 2004, 25 patients with achalasia, diagnosed by digital videofluorography and confirmed by motility studies and endoscopy, underwent surgery. All patients underwent digital videofluorography at 1, 6 and 12 months in order to evaluate the completeness of the myotomy and the efficacy of the antireflux procedures. At postoperative videofluorography esophageal transit time was decreased in all patients (100%); esophageal motor activity was unchanged in 23 (92%), and modified in two patients (8%) with onset of peristaltic-like motor activity; 8 patients (35%) presented decreased preoperative dilatation; all patients had a WST negative for post-myotomy reflux. On the basis of our experience and the advantages of the procedure we suggest videofluorography as a first-approach diagnostic examination useful for surgical indications and postoperative follow-up in achalasic patients.Chirurgia italiana 57(1):59-64. -
Article: [Hiatal hernia, gastro-oesophageal reflux and oesophagitis: videofluorographic, endoscopic and histopathological correlation].
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ABSTRACT: The aim of the study was to evaluate the correlation between hiatal hernia and gastro-oesophageal reflux and related histological abnormalities in patients without endoscopic oesophagitis. A consecutive series of 78 patients with a history of gastro-oesophageal reflux symptoms and hiatal hernia, as defined by videofluorography combined with a water siphon test, underwent oesophagogastroduodenoscopy and multiple biopsies. Hiatal hernia was confirmed endoscopically in 99% of cases. The water siphon test was positive for reflux in 72% of cases. At endoscopy 42% of patients had oesophagitis and/or Barrett's oesophagus and 58% had no lesions. In the group without endoscopic lesions, at histology oesophagitis-related alterations were found in 98% and intestinal metaplasia in 27%. In conclusion, this study shows that symptomatic gastro-oesophageal reflux patients with radiologically defined hiatal hernia should undergo endoscopy with multiple biopsies above the squamocolumnar junction, even when endoscopy is normal. This is in order to detect histological gastro-oesophageal-reflux-related alterations, above all, when a positive water siphon test is also present, owing to its known correlation with intestinal metaplasia.Chirurgia italiana 56(4):483-8. -
Article: [Digital cineradiology in the diagnosis and surgical treatment of pharyngo-oesophageal junction motor disorders].
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ABSTRACT: The aim of the study was to report our experience with the use of radiology in functional disorders of the cricopharyngeal muscle and their surgical therapy using digital cineradiology. Five-hundred and seventy dysphagic patients underwent dynamic study of the oral and pharyngeal phases of swallowing (Videofluoroscopic Swallowing Study, VFSS). A motor disorder of the cricopharyngeal muscle was diagnosed by videofluorography in 19 patients: the disorder was mild in 8, moderate in 7 and severe in 4. Two of these underwent cricopharyngeal myotomy, with an improvement in their dysphagia and swallowing mechanisms. VFSS provides a morphological and functional view of the aero-digestive tracts: this is essential in the diagnosis of cricopharyngeal dysfunction and is capable of revealing the related laryngeal penetration and tracheal aspiration. VFSS must always include an oesophageal phase study because of the known clinical and physico-pathological correlations between the gastro-oesophageal junction and the upper oesophageal sphincter. On the basis of our experience we believe that VFSS could be used as a primary investigation, followed by motility studies, and that it may be a useful complementary procedure both in the diagnosis of pharyngo-oesophageal junction motor disorders and with a view to surgical indications.Chirurgia italiana 56(4):495-500. -
Article: [Supra-esophageal manifestations of gastroesophageal reflux, a different diagnostic approach and an indication for laparoscopic Nissen fundoplication: our experience].
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ABSTRACT: 24-hour oesophageal pH monitoring with a dual pH probe is considered to be the most sensitive test for diagnosing GORD-related otolaryngological manifestations. In this study we evaluate an initial diagnostic approach with digital videofluorography associated to the water siphon test and primary "ex juvantibus" therapy with proton pump inhibitors for patients with supra-oesophageal symptoms of GORD. The results of Nissen fundoplication surgical treatment are also assessed in some of these patients. Two hundred and thirty patients with suspected GORD-related supra-oesophageal symptoms were referred for videofluorography and the water siphon test. When hiatal hernia and/or reflux were found, patients were referred for medical therapy with proton pump inhibitors. Five patients, who had had a good or excellent response to the medical therapy, but had a recurrence underwent laparoscopic Nissen fundoplication and videofluorography 6 months after surgery. Within 6 months, more than 80% of patients had an excellent or good response to medical therapy. In patients undergoing laparoscopic Nissen fundoplication, hoarseness and chronic cough disappeared within 3 months and videofluorography showed good morphofunctional results of the surgery. In patients with GORD-related supra-oesophageal manifestations, videofluorography plus the water siphon test is useful initial investigation, and laparoscopic Nissen fundoplication can be a valid alternative therapeutic option.Chirurgia italiana 55(6):791-6. -
Article: Gastro-oesophageal reflux and "epileptic" attacks: casually associated or related? Efficiency of antireflux surgery: a case report.
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ABSTRACT: Although a possible link between gastro-oesophageal reflux disease (GORD) and obstructive sleeping apnoea has already been reported in the literature, there has never been any suggestion of an association with epilepsy, and epileptic attacks have not so far been included among gastro-oesophageal reflux disease symptoms. We report the case of a patient with gastro-oesophageal reflux disease associated with a sliding hiatus hernia, a short oesophagus and oesophagitis, who for the last ten years had not only presented the typical symptoms of gastrooesophageal reflux, but also symptoms of obstructive sleep apnoea and epileptic-like attacks occurring occasionally and only during sleep. Partial posterior fundoplication was performed and considerably reduced the reflux symptoms, and in addition brought about a drastic decrease in the number of epileptic-like attacks. Our case suggests that epileptic-like episodes in patients with obstructive sleeping apnoea may well be linked to the simultaneous presence of GORD associated with hiatus hernia, and surgical treatment of GORD may bring about an improvement of the neurological problems.Chirurgia italiana 61(1):95-8.
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2005–2013
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Università degli studi di Palermo
- Dipartimento di Discipline Chirurgiche, Oncologiche e Stomatologiche (Di.Chir.On.S.)
Palermo, Sicily, Italy
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