Publications by authors named "Masao Sunahara"
BACKGROUND Solid pseudopapillary neoplasm (SPN) accounts for 1.0% to 2.0% of all pancreatic neoplasms.
View Article and Find Full Text PDFA case of Williams syndrome with suspected coexisting ectopic aldosterone-producing tumor in the liver.
Endocrinol Diabetes Metab Case Rep
September 2020
Summary: A 31-year-old man with Williams syndrome (WS) was referred to our hospital because of a 9-year history of hypertension, hypokalemia, and high plasma aldosterone concentration to renin activity ratio. A diagnosis of primary aldosteronism (PA) was clinically confirmed but an abdominal CT scan showed no abnormal findings in his adrenal glands. However, a 13-mm hypervascular tumor in the posterosuperior segment of the right hepatic lobe was detected.
View Article and Find Full Text PDFArticle Synopsis
- The study investigated the efficacy of laparoscopic lymph node dissection for upper-rectal and sigmoid colon cancer while preserving the inferior mesenteric artery (IMA), as standard practices involving IMA cutting may lead to complications.
- A total of 142 patients were analyzed, with results showing that the mean number of lymph nodes dissected was significantly higher in the D3 group than in the D2 group, with no treatment-related deaths reported.
- The 5-year disease-free survival rates were promising, with stage I at 93%, stage II at 83%, and stage III at 74%, indicating that IMA-preserving dissection is a viable oncological approach for these cancer cases.
Background: Several authors have reported on the utility of a laparoscopic approach for the palliation of malignant bowel obstruction (MBO); however, the advantages of laparoscopic surgery for MBO have not yet been confirmed.
Methods: We retrospectively reviewed the medical records of patients who underwent palliative surgery for MBO between 2007 and 2015. Laparoscopic procedures have been performed when technically possible since 2014.
We report a case of advanced gastric cancer with pyloric stenosis, in which a curative resection was performed following gastrojejunostomy and S-1 based chemotherapy. A 46-year-old female presenting with vomiting was diagnosed with unresectable gastric cancer with pyloric stenosis after a detailed examination. She underwent laparotomy, which revealed a T4 tumor invading the pancreas head and involving the gallbladder.
View Article and Find Full Text PDFBackground: Blockade of CD40-CD40 ligand (CD154) costimulatory pathway with anti-CD154 antibody (Ab) prolongs allograft survival in experimental organ transplantations; however, repeated agent administration is needed to provide an adequate immunosuppression. Seeking for simple and effective approach to interfere this signaling, we applied adenovirus-mediated gene therapy by encoding CD40Ig gene (AdCD40Ig).
Methods: Liver graft from ACI (RT1av1) rat was transplanted orthotopically into LEW (RT1l) rat, and AdCD40Ig was given to animals via the penile vein immediately after grafting (n=6).