A case of hepatocellular carcinoma arising from the intraductal hepatic bile duct without parenchymal lesion.

Hepatocellular carcinoma (HCC) rarely presents as an intraductal tumor with no parenchymal lesions. Here, we present a case of HCC arising from an intrahepatic bile duct. A 74-year-old man who had been treated with direct-acting antiviral therapy for hepatitis C virus infection was referred to our hospital because of elevated serum prothrombin levels induced by vitamin K absence II (PIVKA-II).

A desmoid tumor with fluorodeoxyglucose accumulation arising from the anastomotic site of postoperative gastric cancer: a case report.

Background: Desmoid tumors are extremely rare borderline benign and malignant tumors that do not exhibit accumulation on fluorodeoxyglucose positron emission tomography-computed tomography. In the present study, we report a rare case of a desmoid tumor with fluorodeoxyglucose accumulation at the anastomotic postoperative gastric cancer site.

Case Presentation: A 68-year-old Japanese man underwent robot-assisted laparoscopic distal gastrectomy for early-stage gastric cancer in 2019.

Impact of chest subcutaneous fat on the occurrence of central venous port-related infectious complications in cancer patients.

Purpose: There is no concrete evidence to support the association between the amount of subcutaneous fat area (SFA) in the central venous port-insertion site (precordium) and port-related complications. We aimed to investigate the relationship between SFA in the midclavicular line and postoperative infectious complications in patients undergoing port-insertion surgery.

Methods: This was a single-institute and historical cohort study of 174 patients who underwent first central venous port implantation surgery for chemotherapy between January 2014 and December 2018.

Preoperative Magnetic Resonance Cholangiopancreatography for Detecting Difficult Laparoscopic Cholecystectomy in Acute Cholecystitis.

Previous studies have shown that signal intensity variations in the gallbladder wall on magnetic resonance imaging (MRI) are associated with necrosis and fibrosis in the gallbladder of acute cholecystitis (AC). However, the association between MRI findings and operative outcomes remains unclear. We retrospectively identified 321 patients who underwent preoperative magnetic resonance cholangiopancreatography (MRCP) and early laparoscopic cholecystectomy (LC) for AC.

A case of a jejunal gastrointestinal stromal tumor with significantly elevated CA19-9 levels.

Introduction: A gastrointestinal stromal tumor (GIST) with an elevated serum tumor marker level is very rare. We report a case of jejunal GIST associated with extremely elevated levels of serum carbohydrate antigen 19-9 (CA19-9).

Presentation Of Case: A 61-year-old woman was referred to our hospital for examination of an abdominal tumor.

Total proctocolectomy with end ileostomy for acute onset of ulcerative colitis during chemoradiotherapy for lung adenocarcinoma (successfully treated by surgery): a case report.

Background: Ulcerative colitis (UC) developing during chemotherapy is very rare. Here, we describe a case of acute onset during chemoradiotherapy for lung adenocarcinoma, requiring a total proctocolectomy.

Case Presentation: A 52-year-old man was admitted to the hospital for chemoradiotherapy of lung cancer.

Intraductal dissemination of ampullary carcinoma after pancreatoduodenectomy.

Background: Clinical evidence of intraductal dissemination through the pancreatic duct has been rare. We herein describe a case of ampullary carcinoma that disseminated in the remnant pancreas through the pancreatic duct.

Case Presentation: A 68-year-old woman underwent SSPPD for ampullary carcinoma.

Long-term survival after surgical resection for recurrent hepatic and pulmonary metastases of intrahepatic cholangiocarcinoma: a case report.

Background: A few reports to date have described the effectiveness of surgical resection for recurrent intrahepatic cholangiocarcinoma (ICC). We report in this study a patient who achieved long-term survival after surgical resection for recurrent hepatic and pulmonary metastases of ICC.

Case Presentation: A 62-year-old man was referred to our hospital for examination of a tumor in the left lobe of the liver.

Intraductal papillary neoplasm of the bile duct with rapidly progressive multicentric recurrence: A case report.

Introduction: Knowledge on the pattern of recurrence and prognosis of intraductal papillary neoplasms of the bile duct (IPNB) is limited. Few studies have reported IPNB recurrence in the remnant intrahepatic bile duct, which is indicative of the true multicentricity of IPNB. Herein, we report a case of IPNB with rapidly progressive recurrence in the remnant intrahepatic bile duct and review the literature for discussing the prognosis of IPNB with multicentricity.

The feasibility of laparoscopic extended pelvic surgery for rectal cancer.

Purpose: The present study aimed to assess the safety and feasibility of laparoscopic extended pelvic surgery for primary or recurrent rectal cancer.

Methods: The data on 77 patients, who underwent extended pelvic surgery between February 2008 and June 2014, were retrospectively analyzed. The patients were divided, based on their treatment history, into an open surgery (OS) group (n = 41) and a laparoscopic surgery (LS) group (n = 36).

Clinical Significance of Para-Aortic Lymph Node Dissection for Advanced or Metastatic Colorectal Cancer in the Current Era of Modern Chemotherapy.

Background/aims: Surgical resection is not generally indicated for para-aortic lymph node (PALN) metastasis from colorectal cancer. However, the clinical significance of PALN dissection (PALND) in the current era of modern chemotherapy has not been fully discussed.

Methods: Between November 2006 and February 2013, 14 patients underwent PALND for colorectal cancer and were proven as having pathological PALN metastasis.

Initial experience of laparoscopic pelvic exenteration and comparison with conventional open surgery.

Background: Generalization of laparoscopic pelvic surgery has brought about profound knowledge of the pelvic anatomy and has encouraged expansion of indications for laparoscopic surgery to extended pelvic surgery. Pelvic exenteration (PE) is still a demanding surgical procedure and remains an essential technique for pelvic surgery although minimally invasive and function-preserving surgery is in the mainstream of surgical treatment. However, the techniques of laparoscopic PE (LPE) have been rarely explained nor has its feasibility been fully evaluated.

Role of bevacizumab in neoadjuvant chemotherapy and its influence on microvessel density in rectal cancer.

Background: The role of bevacizumab (Bev) in neoadjuvant chemotherapy (NAC) without radiotherapy for rectal cancer has not been fully discussed. The purpose of this study is to assess the clinicopathological benefit of Bev in NAC for rectal cancer and to investigate its influence on microvessel status in cancerous tissue.

Methods: Data on 47 patients with rectal cancer, who received NAC with or without Bev between August 2008 and November 2012, were analyzed retrospectively.

[Complications after implantation of subcutaneous central venous port].

We retrospectively reviewed 500 cases who were implanted with subcutaneous central venous port(CV port)in our institution from Jan. 2007 to Nov. 2011, to investigate the complications arising after CV port implantation.