[A Case Report of Rectal MiNEN Laparoscopic Resection].

A 74-year-old woman underwent colonoscopy for positive fecal occult blood test. A colonoscopy revealed a Type 1 tumor in the rectosigmoid region. The tumor was diagnosed as well-differentiated adenocarcinoma(tub1)by biopsy.

[Simultaneous Laparoscopic Resection of Gastric Cancer and Hepatocellular Carcinoma].

A report of simultaneous laparoscopic resection for a patient with synchronous gastric cancer and hepatocellular carcinoma (HCC)is presented.A 76-year-old man was referred to our hospital for gastric cancer located in the antrum.In the preoperative examination, enhanced CT and MRI revealed a liver tumor located at S2 that had high contrast enhancement in the arterial phase but that was not washed out in the delayed phase.

[A Case of Pathological Complete Response after Primary Tumor Resection Followed by Hepatectomy-A Sigmoid Colon Cancer with Synchronous Liver Metastases].

The case is of a 62-year-old man with no medical history and no family history.A type 2 tumor was found in the entire circumference of the sigmoid colon by colonoscopy after a positive result on a fecal occult blood test, and 5 liver metastases were recognized in both lobes of the liver by using contrast-enhanced CT.He was first treated by primary tumor resection.

[A Case of Advanced Gastric Cancer for Which Curative Resection Was Performed, Despite CEA Elevation].

A 32-year-old man was admitted to our hospital with the complaint of epigastric pain. Gastrointestinal endoscopy revealed a type 5 advanced gastric cancer at the posterior wall of the antrum. Contrast-enhanced computed tomography (CT) and endoscopic ultrasonography showed a fluid collection, indicating peritoneal metastasis.

[Synchronous Triple Malignant Tumors (Hilar Cholangiocarcinoma, Ascending Colon Cancer, Liposarcoma) Resected in a Two-Stage Procedure--A Case Report].

A 70-year-old man with a history of myocardial infarction (MI) and taking 2 antiplatelet drugs was diagnosed with anemia his 6-month post-MI checkup. A lower gastrointestinal endoscopy detected ascending colon cancer, and contrast-enhanced a computed tomography scan revealed hilar cholangiocarcinoma as well as lesions suspicious for gastrointestinal stromal tumors of the small intestine. The patient was given a preoperative diagnosis of synchronous triple malignant tumors.