Toranomon Hospital 2-2-2 Toranomon Minato city, Tokyo, Japan 105-8470
sasakikazunari1978@hotmail.com
2009- Staff Surgeon Department of Digestive Surgery, Hepato-Biliary-Pancreatic Surgery Unit, Toranomon Hospital, Tokyo, Japan Residency 2006-2008 Toranomon Hospital, Tokyo, Japan 　 　　　　　　 2008-2009 Department of Transplant Surgery, National Center for Child 　 　　　　　　　　　　　　　　　　　 Health and Development,Tokyo, Japan
Internship 2004-2006 Kyoto University Hospital, Kyoto, Japan Medical School 1998-2004 Shiga University of Medical Science, Shiga, Japan
Abstract: AIM: In patients with hepatoviral infection, although a wide resection margin can eradicate the microsatellite lesions around hepatocellular carcinoma (HCC), a large-volume hepatectomy may diminish remaining liver function and become an obstacle for treating recurrent HCC. The optimal width of the resection margin for these patients is still controversial. This study was conducted to investigate the optimal resection margin in hepatectomy for hepatoviral infection patients. METHODS: We retrospectively investigated the influences of the resection margin status on recurrence patterns and long-term prognosis in a group of 311 HCC patients with hepatoviral infection who had a solitary HCC without perioperative anti-HCC treatment. RESULTS: The resection margin status did not statistically influence the postoperative recurrence-free and overall survival rates (3-year recurrence-free survival of 61.0% vs 55.1%, P = 0.33; 5-year overall survival of 74.9% vs 81.5%, P = 0.77 in without a margin vs with a margin, respectively), although resection without a margin increased the local recurrence with marginal significance (P = 0.055). Regarding the width of the resection margin, in 30-mm or smaller HCC, resection margin did not significantly improve the prognosis among hepatoviral infection patients. However, for tumors larger than 30 mm, a resection margin wider than 3 mm showed significant impacts on the prevention of recurrence in spite of the influence of multicentric carcinogenesis. CONCLUSION: The resection margin used for eradication of microsatellite lesions showed differences that were dependent on tumor size in hepatoviral infection patients. Resection margin should be based on not only background liver function but also tumor characteristics.
Abstract: BACKGROUND: Hepatectomy for hepatocellular carcinoma (HCC) in patients with primary biliary cirrhosis (PBC) has seldom been reported, and the clinical significance of this procedure remains unclear, although HCC has often been observed in end-stage PBC patients. METHODS: To understand the characteristics of hepatectomy on HCC in PBC patients, we examined 7 cases at our institute, as well as 22 reported hepatectomy cases in the English and Japanese literature. Furthermore, to assess the treatment efficacy of hepatectomy for HCC in PBC patients, we compared these patients with viral hepatitis patients who underwent hepatectomies at our institute during the same period. RESULTS: In the review of 29 cases, more than 70% of the patients were aged over 65 years, and the mean Mayo risk score was low at 5.17. The resected tumors were mainly solitary (79%), and the median maximum tumor size was 37 mm. Approximately two-thirds of the patients met the Milan criteria. In the comparison between the PBC and viral hepatitis cases, there were no differences in the postoperative prognoses, although the tumor size was greater in the PBC cases. CONCLUSION: Hepatectomy for HCC in selected PBC cases is a feasible and potentially curative treatment option, similar to hepatectomy for HCC in viral hepatitis patients. This procedure is particularly useful for patients with preserved liver function who are not ideal candidates for liver transplantation.
Abstract: Unexpected early cancer-related death (ECRD) within 2 years due to recurrence after curative hepatectomy for solitary small (<5 cm) hepatocellular carcinoma without macroscopic vascular invasion (SSHCC) is occasionally observed.
Abstract: To investigate the safety and feasibility of our original single-incision laparoscopic cholecystectomy (SILC) for acute inflamed gallbladder (AIG).
Abstract: To maintain operative safety, patient selection criteria for single-incision laparoscopic cholecystectomy (SILC) are more stringent than that for traditional laparoscopic cholecystectomy (TLC). No other method could demonstrate the same feasibility and safety as TLC because the patient selection criteria were too restrictive for SILC to compare with TLC. In this study, we conducted a comparative study between our original SILC and TLC for demonstrating similar feasibility and safety among patients who had the same selection criteria as that for TLC. A statistical comparison between 114 patients of SILC and 201 patients of TLC was conducted during the same time period. The preoperative patient characteristics for SILC and TLC showed no statistical difference. In the operative result analysis, a significant disadvantage of SILC was the prolongation of operative time by only 15 minutes. The original SILC was as feasible and safe as TLC and virtually scarless cholecystectomy could be performed without any selection criteria. This was performed using only 2 trocars from an umbilical incision and 2 incisionless extracorporeal retraction devices.
Abstract: Classically defined cystic duct carcinoma is extremely rare owing to its strict diagnostic criteria, which are not suitable in actual clinical settings. Recently, several new classifications of cystic duct carcinoma were reported, which defined it as a tumor with its center located in the cystic duct. On the other hand, the incidence of cystic duct carcinoma, based on the new classifications, is not rare, but all reported cases are advanced. PRESENTATION OF CASE: A 77-year-old man with dilatation of the common bile duct, a stricture at the level of the cystic duct junction, and a filling defect of contrast medium into cystic duct in endoscopic retrograde cholangiopancreatography was diagnosed with cystic duct carcinoma. Radical cholecystectomy with bile duct resection was performed. In the resected specimen, we found that a 2Â cm tumor whose center was located in the cystic duct and vertically limited to the mucosal layer. Horizontally, the tumor was superficially spread in the gallbladder, which were also limited to the mucosal layer.
Abstract: BWS is one of the most well-known somatic overgrowth syndromes, which is characterized by macroglossia, organomegaly, abdominal wall defects, and predisposition to embryonal tumors, such as Wilms' tumor, hepatoblastoma, and adrenocortical carcinoma. We report a case of BWS in a girl with unresectable hepatoblastoma, who received a planned LVDT following neo-adjuvant chemotherapy. This is the first case report of liver transplantation for patients with BWS. Tumor surveillance after transplantation would be necessary to detect possible recurrence of the original disease and development of other malignancies.
Abstract: Schwannomas of the left recurrent nerve are rare and there is no agreement on how to manage them without causing recurrent nerve dysfunction. We present a 63-year-old male with unspecific clinical symptoms in whom a middle mediastinal mass with a diameter of 5 cm was found incidentally. At thoracoscopic surgery,we found that the encapsulated tumor originated from left recurrent nerve and we performed tumor enucleation without sacrificing the recurrent nerve. The patient did experience postoperative hoarseness and vocal cord paralysis even though we preserved the recurrent nerve. To our knowledge, thoracoscopic removal of a left recurrent nerve schwannoma has not been reported in the literature before.
Abstract: Angiogenesis is believed to be involved in the pathogenesis and progression of multiple myeloma (MM). In some young patients, the MM has been reported to be complicated with high-output cardiac failure (HOCF), in which an increase in the vascular bed may be involved in the pathogenesis; however, no throughput studies have been conducted to determine what angiogenic factors are associated with HOCF in MM patients. We experienced a 34-year-old MM patient with HOCF and used the cytokine array system to investigate the expression of angiogenic cytokines and related factors in his serum before and after treatment and to compare the results with those of a healthy volunteer. We treated the patient with chemotherapy in combination with autologous peripheral blood stem cell transplantation. Following the treatment, he showed a good partial response without any signs of cardiac failure. The patient had experienced dramatic increases in the expression levels of angiopoietin 2, insulin-like growth factor-binding protein 6, and glial cell line-derived neurotrophic factor. After treatment, the levels of these factors decreased remarkably in association with an improvement in the patient's clinical condition. We review previous case reports in our discussion of the significance of these findings in the pathogenesis of MM with HOCF.
