A Case of Ulcerative Colitis with Acute Pericarditis after Dose Escalation of Mesalazine.

Mesalazine-induced pericarditis is rare, and most cases occur at the time of treatment initiation. A 30-year-old man with ulcerative colitis who had experienced remission for 2 years with mesalazine 2,000 mg/day subsequently experienced relapse. Therefore, the mesalazine dose was increased to 4,000 mg.

Characteristics of positive horizontal margins in patients who underwent colorectal endoscopic submucosal dissection.

Objectives: Endoscopic submucosal dissection (ESD) enables en bloc resection of colorectal neoplasms, but occasionally results in positive horizontal margins (HMs). However, the site of the resected specimen that tends to be positive for HM has not been investigated. We aimed to clarify the characteristics associated with HMs in lesions resected en bloc with ESD.

A balloon-assisted endoscopic submucosal dissection using long colonoscope and guidewire.

Balloon-assisted endoscopy enables stable endoscopic maneuverability. Balloon-assisted endoscopic submucosal dissection (BA-ESD) is useful in the treatment of proximal colorectal tumors where scope maneuverability is poor. Herein, we reported a case in which BA-ESD was successfully performed using a long colonoscope with a guidewire, although the lesion could not be reached using the balloon-assisted endoscopy technique with a therapeutic colonoscopy.

A Hepatitis B Virus Reactivation Case Potentially Triggered by the Onset of Diffuse Large B Cell Lymphoma.

An 81-year-old man underwent rituximab-containing chemotherapy for chronic lymphocytic leukemia (CLL). Thirteen years after his last chemotherapy, he was diagnosed with hepatitis B virus (HBV) reactivation. He was then treated with entecavir, and improvement was seen in his liver injury.

A case of stricture-type ischemic colitis from excessive alcohol consumption, with follow-up to rule out colon cancer.

A 69-year-old man was admitted to Hanawa Kousei Hospital with acute hepatitis attributed to alcohol consumption. His condition improved with conservative treatment. Computed tomography (CT) showed localized thickening of the colonic wall at the splenic flexure;carcinoembryonic antigen level was slightly elevated to 9.

[Adult case of hypoganglionosis of the colon with a skip lesion: a case report].

A 77-year-old woman was referred for severe constipation and abdominal distension which had lasted for 1 month. A computed tomography (CT) scan and a colonoscopy revealed segmental stricture in the transverse and descending colons. After no improvement in her symptoms was observed with conservative therapy, we performed a left hemicolectomy.

A case of inflammatory fibroid polyp of the stomach with an "erect penis like appearance" successfully removed by endoscopic submucosal dissection.

A 37-year-old woman was diagnosed by esophagogastroduodenoscopy (EGD) as having a 15-mm subepithelial lesion (SEL) in the gastric body. For 2 years, she experienced epigastric pain and anemia; she then underwent emergency EGD, which revealed a significant morphological change of the lesion. The SEL had a disintegrated tip and its submucosal portion was substantially exposed out of the mucosa, showing an "erect penis like appearance".