Kenkichi Hashimoto

CYFRA 21-1 determination in patients with esophageal squamous cell carcinoma

While there are reports that CYFRA 21‐1 is a useful tumor marker, to our knowledge the clinical utility of this marker to detect recurrences for squamous cell carcinoma of the esophagus has not been addressed.

Laparoscopic treatment of splenosis: Report of a case

A 52-year-old woman with a history of splenectomy for a splenic injury 45 years earlier underwent investigations for a pre-existing gynecologic disease. Contrastenhanced abdominal computed tomography (CT) and magnetic resonance imaging (MRI) showed a tumor, 3 cm in diameter, adjacent to the sigmoid colon, suggestive of a gastrointestinal stromal tumor (GIST). Laparoscopic exploration revealed a white mass protruding from the subserosa of the sigmoid colon, and we performed laparoscopic-assisted sigmoidectomy to rule out a GIST. Pathological studies showed splenic tissue, thus confirming a diagnosis of splenosis, given the history of splenic injury. This case of splenosis mimicking GIST following splenic injury was diagnosed correctly and treated successfully with laparoscopic surgery. To our knowledge, this is the first case of splenosis treated with laparoscopic colectomy with no tumor extirpation.

Mid-term results of bariatric surgery in morbidly obese Japanese patients with slow progressive autoimmune diabetes: Bariatric surgery in autoimmune diabetes

Bariatric surgery is recognized as an effective treatment for type 2 diabetes mellitus, but data on its efficacy for type 1 diabetes mellitus, especially slowly progressive insulin‐dependent diabetes mellitus, are limited.