Harushi Udagawa

Toranomon Hospital, Edo, Tōkyō, Japan

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Publications (95)141.61 Total impact

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    ABSTRACT: Little is known about the vascular and lymphatic distribution of the pyloric antrum in the stomach. We focused on the infrapyloric region containing the infrapyloric artery (IPA) and lymph nodes.
    09/2014;
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    ABSTRACT: The following, from the 12th OESO World Conference: Cancers of the Esophagus, includes commentaries on approaches to the epidemiology, diagnosis, and treatment of esophageal cancer in Europe, South Africa, Kenya, Australia, and China; the molecular classification of esophageal cancers (including cancers at the gastroesophageal junction); the Japanese classification; the scope of the Human Variome Project; and the topographic–anatomic subclassification of adenocarcinomas of the gastroesophageal junction.
    Annals of the New York Academy of Sciences 09/2014; 1325(1). · 4.38 Impact Factor
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    ABSTRACT: The following, from the 12th OESO World Conference: Cancers of the Esophagus, includes commentaries on the evolution of Barrett's dysplasia to early cancer; the early detection of esophageal cancer in China; new technologies of treatment for dysplasia; the prognostic value of molecular markers expression in esophageal squamous cell carcinoma; the follow-up schedule after ablation of high-grade dysplasia; intramucosal cancers; and tubular widespread endoscopic esophageal submucosal dissection with high-dose steroid stricture prevention.
    Annals of the New York Academy of Sciences 09/2014; 1325(1). · 4.38 Impact Factor
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    ABSTRACT: Thermal injuries of the esophagus are rare causes of benign esophageal stricture, and all published cases were successfully treated with conservative management. A 28-year-old Japanese man with a thermal esophageal injury caused by drinking a cup of hot coffee six months earlier was referred to our hospital. The hot coffee was consumed in a single gulp at a party. Although the patient had been treated conservatively at another hospital, his symptoms of dysphagia gradually worsened after discharge. An upper gastrointestinal endoscopy and computed tomography revealed a pinhole like area of stricture located 19 cm distally from the incisors to the esophagogastric junction, as well as circumferential stenosis with notable wall thickness at the same site. The patient underwent a thoracoscopic esophageal resection with reconstruction using ileocolon interposition. The pathological findings revealed wall thickening along the entire length of the esophagus, with massive fibrosis extending to the muscularis propria and adventitia at almost all levels. Treatment with balloon dilation for long areas of stricture is generally difficult, and stent placement in patients with benign esophageal stricture, particularly young patients, is not yet widely accepted due to the incidence of late adverse events. Considering the curability and quality-of-life associated with a long expected prognosis, we determined that surgery was the best treatment option for this young patient. In this case, we decided to perform an esophagectomy and reconstruction with ileocolon interposition in order to preserve the reservoir function of the stomach and to avoid any problems related to the reflux of gastric contents. In conclusion, resection of the esophagus is a treatment option in patients with benign esophageal injury, especially in cases involving young patients with refractory esophageal stricture. In addition, ileocolon interposition may help to improve the quality-of-life of patients.
    World Journal of Gastroenterology 07/2014; 20(27):9205-09. · 2.55 Impact Factor
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    ABSTRACT: Lung metastasectomy has become an effective treatment for selected patients with colorectal cancer, renal cancer, and other malignancies; however, limited experience has been reported regarding pulmonary metastasectomy for esophageal carcinoma. We reviewed 23 patients with esophageal cancer who underwent pulmonary metastasectomy and investigated their long-term prognosis and prognostic factors. A total of 23 patients who underwent 30 curative pulmonary metastasectomies at Toranomon Hospital, Japan, between 2001 and 2011 were included. Four patients underwent repeated metastasectomy. The overall survival rate was examined by the Kaplan-Meier method and various characteristics were assessed by univariate analysis to identify prognostic factors. The overall 1-, 3-, and 5-year survival rate was 82.6, 46, and 34.1 %, respectively. Median follow-up was 37.4 months (range 1-114 months). Univariate analysis revealed a history of extrapulmonary metastases before pulmonary metastasectomy, poorly differentiated primary esophageal carcinoma, and short disease-free interval (DFI) as unfavorable prognostic factors. Five patients who underwent repeated metastasectomy for recurrent pulmonary metastases survived a mean 58 months (range 24-114 months). The other patients survived a mean 29.4 months (range 1-109 months). Pulmonary resection for lung metastases from esophageal carcinoma should be considered in selected patients, and repeated metastasectomy should be encouraged. Extrapulmonary metastases before pulmonary metastasectomy, poor differentiation of primary esophageal carcinoma, and short DFI are unfavorable prognostic factors. Due to poor prognosis, metastasectomy in patients with these factors should be more carefully considered before being indicated.
    Annals of Surgical Oncology 05/2014; · 4.12 Impact Factor
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    ABSTRACT: Esophagectomy for thoracic esophageal cancer is a highly invasive procedure. Most studies analyzing the risk factors for pulmonary morbidity were conducted in the early 1990s. However, previous studies did not use fixed diagnostic criteria for postoperative pneumonia and reported widely varying onset frequencies.To define postoperative pneumonia diagnostic criteria, clarify the onset frequency of postoperative pneumonia after esophagectomy in accordance with these criteria, and investigate the risk factors of postoperative pneumonia.Risk factors for postoperative pneumonia were analyzed in 615 patients who underwent esophagectomy between January 2006 and December 2007 at 7 Japanese institutions using logistic regression models. The necessary criterion for a pneumonia diagnosis was an infiltrative shadow on a chest radiograph. Furthermore, a pneumonia diagnosis was based on the presence of at least 2 of the following 3 criteria: white blood count abnormalities, body temperature of 38 °C or higher, and purulent sputum.Overall, 615 patients were statistically analyzed. Pneumonia onset occurred in 66 cases (10.7 %). The risk of postoperative pneumonia was associated with a preoperative body weight loss of 5 % or more and late tracheal tube extubation.This study revealed that preoperative body weight loss increased the risk of postoperative pneumonia after esophagectomy for esophageal cancer, while early-stage tracheal tube extubation reduced the risk.
    Esophagus 01/2014; 11(2). · 0.83 Impact Factor
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    ABSTRACT: Objective In the present TNM classification, involvement of supraclavicular nodes is defined as distant metastases. However, the therapeutic value of supraclavicular node dissection remains controversial. The purpose of this study was to evaluate the survival benefit of dissection of metastases to the supraclavicular lymph nodes in patients with thoracic esophageal carcinoma, based on a large nationwide registry of esophageal cancer maintained by the Japanese Esophageal Society. Methods The study group comprised 1309 patients with thoracic esophageal carcinoma treated in 2001, 2002, and 2003, who underwent esophagectomy with three-field dissection for curative intent, and in whom the locations of pathological metastatic lymph nodes and outcome evaluations were available. Results Of 1309 patients, 559 patients (42.7%) had no nodal metastases, 560 (42.8%) had at least one positive node, but were supraclavicular node-negative, and 190 (14.5%) had supraclavicular node metastases. The 5-year survival was 73.7% for N0 patients, 40.4% for node-positive patients without supraclavicular node disease, and 24.1% for patients with supraclavicular node metastasis. In a multivariate analysis, male sex (P < 0.001), deeper T category (P < 0.001), and more positive nodes (P < 0.001) retained statistical significance as adverse prognostic factors for overall survival. Supraclavicular node metastasis was not significant (P=0.062). Conclusions The survival benefit of dissection of metastases to the supraclavicular lymph nodes was indicated in patients with thoracic esophageal carcinoma. Supraclavicular nodes appear to be regional nodes similar to other regional nodes.
    The Journal of thoracic and cardiovascular surgery 01/2014; · 3.41 Impact Factor
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    ABSTRACT: Recently, the use of endoscopic submucosal dissection (ESD) for gastric submucosal tumor (gSMT) and the development of laparoscopic and endoscopic cooperative surgery (LECS) have enabled either preservation of the stomach or minimization of the extent of partial resection. In the present study, the outcomes following the recent introduction of LECS for gSMT are presented. The aim of this retrospective study was to evaluate the feasibility and safety of LECS for gSMT, including esophagogastric junction (EGJ) SMT. LECS is indicated for lesions that have an intragastric growth pattern, or for which fundusectomy can be avoided despite an extragastric growth pattern. We retrospectively evaluated the outcome of LECS carried out in 25 patients including five EGJ SMT. Surgery was completed achieving an R0 resection rate of 100% with no postoperative complications. Mean tumor sizewas 32.3 ± 13.5 mm and mean resected specimen size was 37.6 ± 13.5 mm. Resection margins were tumor-free in all cases, with adequate minimum surgical margins, and precise conclusive diagnosis was achieved with perfect operative specimens. Endoscopic confirmation of the EGJ enabled the extent of resection to be minimized and the stomach to be preserved, avoiding fundusectomy. Although there were significant differences in tumor size and resected specimen size between EGJ SMT and non-EGJ SMT, there were no significant differences in outcomes of the LECS procedure. LECS is feasible and safe for cases with gSMT including lesions adjacent to the EGJ.
    Digestive Endoscopy 12/2013; · 1.61 Impact Factor
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    ABSTRACT: In totally laparoscopic distal gastrectomy, determining the resection line with safe proximal margins is often difficult, particularly for tumors located in a relatively upper area. This is because, in contrast to open surgery, identifying lesions by palpating or opening the stomach is essentially impossible. This study introduces a useful method of tumor identification that is accurate, safe, and rapid. On the operation day, after inducing general anesthesia, a mixture of sodium hyaluronate and patent blue is injected into the submucosal layer of the proximal margin. When resecting stomach, all marker spots should be on the resected side. In all cases, the proximal margin is examined histologically by using frozen sections during the operation. From October 2009 to September 2011, a prospective study that evaluated this method was performed. A total of 34 patients who underwent totally laparoscopic distal gastrectomy were enrolled in this study. Approximately 5 min was required to complete the procedure. Proximal margins were negative in all cases, and the mean ± standard deviation length of the proximal margin was 23.5 ± 12.8 mm. No side effects, such as allergy, were encountered. As a method of tumor identification for totally laparoscopic distal gastrectomy, this procedure appears accurate, safe, and rapid.
    Surgical Endoscopy 11/2013; · 3.43 Impact Factor
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    ABSTRACT: We report a case of mixed adenoendocrine carcinoma of the upper thoracic esophagus arising from ectopic gastric mucosa. A 64-year-old man who had been diagnosed with an esophageal tumor on the basis of esophagoscopy was referred to our hospital. Upper gastrointestinal endoscopy revealed the presence of ectopic gastric mucosa and an adjacent pedunculated lesion located on the posterior wall of the upper thoracic esophagus. Subtotal esophagectomy with three-field lymph node dissection was performed. A microscopic examination revealed that there was a partially intermingling component of neuroendocrine carcinoma adjacent to a tubular adenocarcinoma which was conterminous with the area of the ectopic gastric mucosa. Although the tubular adenocarcinoma was confined to the mucosa and submucosa, the neuroendocrine carcinoma had invaded the submucosaand there was vascular permeation. Each component accounted for 30% or more of the tumor, so the final histopathological diagnosis was mixed adenoendocrine carcinoma of the upper thoracic esophagus arising from ectopic gastric mucosa. Adjuvant chemotherapy was not performed, because the postoperative tumor stage was IA. The patient was well and had no evidence of recurrence 16 months after surgery.
    World Journal of Surgical Oncology 09/2013; 11(1):218. · 1.09 Impact Factor
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    ABSTRACT: Although gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract, they are very rare. This study evaluated clinical and histopathological characteristics of duodenal GISTs to identify factors useful in predicting prognosis for patients with these tumors. A retrospective study was performed on 20 patients who had undergone surgery between 1987 and 2009 for duodenal GISTs. Clinical, histopathological, and immunohistochemical data were evaluated. Survival analyses were conducted using Kaplan-Meier estimates. In 12 patients (60%), duodenal GISTs were diagnosed incidentally. Eight cases (40%) were classified as high risk grade GISTs. Skeinoid fibers (SkF), which are eosinophilic globular hyaline deposits in the extracellular interstitium of the tumor, were found in 12 patients. Skeinoid fibers were not recognized in 8 cases, and these included 3 cases (37.5%) where tumors recurred after surgery and the patient died. Tumors without SkF were larger (81 +/- 92 vs. 23 +/- 8 mm, P < 0.001) and had a higher mitotic count (224.0 +/- 336.6 vs. 0.0 +/- 0.0 /50 high-power field, P < 0.001) than those with SkF. Survival time was shorter in patients with tumors lacking SkF (52.9 +/- 50.7 vs. 108.9 +/- 86.5 months, P = 0.019). We have identified clinical and histopathological characteristics that were useful in predicting the prognosis of patients with duodenal GISTs. In this study, 60% of the tumors were found incidentally, SkF were not recognized in tumors from 40% of patients, and all cases of post-operative tumor recurrence and death occurred in this subgroup of patients.
    World Journal of Surgical Oncology 08/2013; 11(1):202. · 1.09 Impact Factor
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    ABSTRACT: Hypomagnesemia is one of the well-known side effects in patients receiving cisplatin-containing chemotherapy. However, the relevance between hypomagnesemia and cisplatin-induced nephrotoxicity remain to be completely elucidated. Although patients with esophageal and hypopharyngeal cancer are susceptible to dehydration, there is no evidence yet that magnesium supplementation for these patients will prevent nephrotoxicity during cisplatin-containing chemotherapy. The aim of this study was to examine the effect of magnesium supplementation on the prevention of cisplatin-induced nephrotoxicity for patients with esophageal and hypopharyngeal cancer. Twenty-three patients with esophageal or hypopharyngeal cancer were studied over 2 weeks. Ten of them received magnesium supplementation and 13 did not. Magnesium sulphate(20 mEq) was administered before 5-fluorouracil(800mg/m2/24 h/day 1-5)and cisplatin(80mg/m2/day 1)(FP)treatment. The maximum serum creatinine concentration of magnesium-supplemented group demonstrated a significantly lower concentration compared to the non-magnesium-supplemented group(p=0. 018). As a result, magnesium supplementation successfully reduced the incidence rate of nephrotoxicity(p=0. 038). These results showed that magnesium supplementation before FP treatment may be quite beneficial for preventing nephrotoxicity in patients with esophageal and hypopharyngeal cancer, and it is therefore recommended that magnesium be routinely supplemented during FP treatment for esophageal or hypopharyngeal cancer.
    Gan to kagaku ryoho. Cancer & chemotherapy 06/2013; 40(6):743-7.
  • Hisahiro Matsubara, Harushi Udagawa
    Kyobu geka. The Japanese journal of thoracic surgery 06/2013; 66(6):454-5.
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    ABSTRACT: A three-arm Phase III trial was started in November 2012. Preoperative chemotherapy with cis-platin plus 5-fluorouracil is the current standard treatment for locally advanced esophageal cancer in Japan, while preoperative chemoradiotherapy with cisplatin plus 5-fluorouracil is the standard in Western countries. Preoperative chemotherapy with docetaxel, cisplatin plus 5-fluorouracil is another promising regimen. The purpose of this study is to confirm the superiority of docetaxel, cisplatin plus 5-fluorouracil over cisplatin plus 5-fluorouracil and the superiority of cisplatin plus 5-fluorouracil with chemoradiotherapy over cisplatin plus 5-fluorouracil as pre-operative therapy for squamous cell carcinoma of esophagus. A total of 501 patients will be accrued from 41 Japanese institutions within 6.25 years. The primary endpoint is overall sur-vival and the secondary endpoints include progression-free survival, %R0 resection, response rate, pathologic complete response rate and adverse events.
    Japanese Journal of Clinical Oncology 05/2013; · 1.90 Impact Factor
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    ABSTRACT: We focused on the embryology and topographic anatomy of the infrapyloric lymph region, which is frequently involved in node metastases but technically complicated for dissection in gastric cancer surgery. Gastrointestinal organs possess their own mesenteries composed of double layers of peritoneum that enclose the intermediate adipose layer providing pathways for vessels, nerves, and lymphatic channels. The frontal layer of the mesoduodenum, in which no. 6 infrapyloric nodes lie, directly faces the pancreas and during gestation is overlain by the greater omentum and transverse mesocolon through the membranous connective tissue called the fusion fascia. Therefore, we performed no. 6 node dissection using the following process: (1) we traced out the mesoduodenum by detachment of the greater omentum and transverse mesocolon; (2) we transected the fusion fascia and (3) removed the adipose layer on the anterior face of the pancreas with its included lymph nodes together with the right gastroepiploic and infrapyloric vessels. The described technique is feasible and in keeping with the anatomical logic for oncologically reliable dissection of no. 6 infrapyloric nodes.
    Gastric Cancer 01/2013; · 3.99 Impact Factor
  • Esophagus 01/2013; 7(1):7-22. · 0.83 Impact Factor
  • M Ueno, H Udagawa
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    ABSTRACT: A risk of cardiac complications is one of the most significant risks to patient undergoing major surgery. Especially, for the patients with cancer, the preoperative management can be complex. The direct effect of cancer and side effect of prior chemotherapy or radiation therapy should be considered. The 2007 American College of Cardiology/American Heart Association( ACC/AHA) guidelines on perioperative cardiovascular evaluation for noncardiac surgery concluded that 3 elements must be assessed to determine the risk of cardiac event. The preoperative risk in a patient is initially assessed by the presence or absence of clinical predictors of increased perioperative cardiovascular risk, the patient's level of cardiac function, and the underlying risk of the surgical procedure. Here we will provide an overview of issue that are relevant to patients with esophageal cancer.
    Kyobu geka. The Japanese journal of thoracic surgery 08/2012; 65(8):743-8.
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    ABSTRACT: Although the three-field lymphadenectomy has established as a standard operation for esophageal cancer in Japan, criticism remains due to the lack of randomized controlled trials with a high EBM level. This retrospective study aims to clarify the effectiveness of the three-field lymphadenectomy using the data obtained from 906 consecutive patients with esophageal cancer who underwent R0 esophagectomy with the three-field lymphadenectomy. Efficacy Index (EI) was calculated for each lymph node station and grossly cervical, mediastinal, or abdominal dissection field. The values of EI were compared according to main tumor location. Cervical lymph node dissection had high EI in upper and middle thoracic esophageal cancer but it was very small in lower esophageal cancer. Abdominal lymphadenectomy for upper thoracic esophageal cancer had some but limited efficacy only in paracardiac and lesser curvature stations. Cervical lymphadenectomy for lower esophageal cancer showed some but limited efficacy only in cervical paraesophageal stations. Our investigation clearly shows the effectiveness and importance of wide range lymph node dissection defined as D3 according to the Japanese N-grouping system for thoracic esophageal cancer. The three-field lymphadenectomy is regarded as a standard procedure for upper and middle thoracic esophageal cancer. J. Surg. Oncol. 2012; 106:742-747. © 2012 Wiley Periodicals, Inc.
    Journal of Surgical Oncology 04/2012; 106(6):742-7. · 2.64 Impact Factor
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    ABSTRACT: To perform a retrospective analysis of UFT and oral leucovorin plus PSK combination adjuvant chemotherapy for stage III colon cancer in order to evaluate both treatment efficacy and toxicity. Between 2003 and 2009, 273 stage III colon cancer patients underwent surgery in our institute, and we studied 156 of them. Patients' median age was 72 years old; 87 men and 69 women. Of all patients, 119 had stage IIIa and 37 had stage IIIb. The 3-year disease, free survival rates for stage III, stage IIIa and stage IIIb patients were 73. 9%and 80. 6%and 51. 4%, respectively, and the 3-year overall survival rates for stage III was 97. 6%. With regard to toxicity, liver function disorder was observed in 9. 6%of the patients as the most frequent adverse event, but there was no grade 3 or 4 toxicity. UFT and oral leucovorin plus PSK combination adjuvant chemotherapy for stage III colon cancer showed a good response especially for stage III a.
    Gan to kagaku ryoho. Cancer & chemotherapy 04/2012; 39(4):571-5.
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    ABSTRACT: The Japan Clinical Oncology Group (JCOG) 9907 trial has changed the standard of care for advanced thoracic oesophageal cancer in Japan from postoperative chemotherapy to preoperative chemotherapy. The impact of preoperative chemotherapy on the risk of developing postoperative complications remains controversial. This article reports the safety analysis of JCOG9907, focusing on risk factors for postoperative complications. Patients with potentially resectable advanced thoracic oesophageal squamous cell carcinoma were randomized to either postoperative or preoperative chemotherapy followed by transthoracic oesophagectomy with D2-3 lymphadenectomy. Chemotherapy consisted of two cycles of cisplatin and 5-fluorouracil. Clinical baseline data, intraoperative complications, postoperative complications and in-hospital mortality, collected on the case report forms in a predetermined format, were analysed. Univariable and multivariable analyses were used to explore the risk of postoperative complications in relation to treatment group, age, sex, tumour depth, nodal metastasis, stage and location. Of 330 patients randomized, 166 were assigned to receive postoperative chemotherapy and 164 preoperative chemotherapy; 162 and 154 patients respectively underwent surgery. The incidence of intraoperative complications, postoperative complications and in-hospital mortality was similarly low in both groups. Multivariable analysis showed that age, sex and tumour location were independently associated with an increase in postoperative complications, but preoperative chemotherapy was not. Preoperative chemotherapy does not increase the risk of complications or hospital mortality after surgery for advanced thoracic oesophageal cancer.
    British Journal of Surgery 09/2011; 98(12):1735-41. · 4.84 Impact Factor

Publication Stats

1k Citations
141.61 Total Impact Points

Institutions

  • 1991–2014
    • Toranomon Hospital
      Edo, Tōkyō, Japan
  • 2007
    • Kurume University
      • Department of Surgery
      Куруме, Fukuoka, Japan
  • 2002
    • Juntendo University
      • Department of Esophageal and Gastroenterological Surgery
      Edo, Tōkyō, Japan