A Case of Ischemic Colitis Results from the Bleeding on Gastric Dieulafoy Lesions / 대한소화기내시경학회지

Ischemic colitis is the most common ischemic injury of the gastrointestinal tract. It can result from ischemia caused by compromised blood flow to the mesenteric arteries. Colonic ischemia may be precipitated by several conditions, although a cause is not clearly identified in most cases. A 63-year-old man was admitted because of loss of consciousness with melena. After endoscopic bleeding control of Dieulafoy lesions of the stomach, hematochezia occurred during the in-hospital care period. A sigmoidoscopy and computed tomography scan were conducted to evaluate the hematochezia, and ischemic colitis was diagnosed. Here, we report a case of ischemic colitis associated with massive upper gastrointestinal bleeding.

A Case of Henoch-Schonlein Purpura Involving Colon Mimicking Colon Cancer / 대한소화기내시경학회지

Henoch-Schonlein purpura is the most common form of systemic vasculitis in children but occurs rarely in adults. Henoch-Schonlein purpura has characteristic features of a purpuric skin rash, abdominal pain, arthralgia, and abnormal urinary findings. Gastrointestinal tract involvement is characterized by abdominal pain and gastrointestinal bleeding. Recently, we experienced a case of Henoch-Schonlein purpura with gastrointestinal involvement mimicking colon cancer in a 41-year-old female who complained of erythematous macules, arthralgia, and abdominal pain. The initial colonoscopic findings and computed tomographs failed to rule out colon cancer, but serial endoscopic examinations and clinical manifestations revealed colonic involvement of Henoch-Schonlein purpura.

A Case of Pneumatosis Cystoides Intestinalis in Which Endoscopic Ultrasonography Was Useful for the Diagnosis / 대한소화기내시경학회지

Pneumatosis cystoides intestinalis (PCI) is an uncommon condition in which submucosal or subserosal gas cysts are present within the bowel wall. We report a case of a 37-year-old man with no medical history. He underwent a colonoscopy for screening purposes, which revealed multiple and variably sized submucosal tumors in the ascending colon. Endoscopic ultrasonographic (EUS) finding showed multiple hyperechogenic regions with distal acoustic shadowing within the submucosa of the ascending colon. A computed tomography scan showed multiple air-filled cystic masses in the ascending colon. EUS appears to be effective for the diagnosis of PCI.

A Case of Biliary Cast Syndrome in a Non-liver Transplant Patient / 대한소화기내시경학회지

Biliary casts are uncommon but are typically seen in post-liver transplant patients, whereas very few cases have been reported in non-liver transplant patients. A 65-year-old man, who had not undergone a liver transplantation or other hepatobiliary surgery, presented with jaundice and fever. Radiological imaging studies showed diffuse thickening and enhancement of the intrahepatic duct with mild ductal dilatation and multiple linear filling defects. A percutaneous transhepatic cholangioscopy revealed severe bile duct inflammation and multiple biliary casts, which were removed with multiple percutaneous choledocoscopic procedures. The pathogenesis of the biliary casts in this patient was uncertain. However, we presumed that biliary tract infection with subsequent extensive cholangitis was an important predisposing factor in the cast formation. We report a case of biliary cast syndrome with no preexisting morbidity that was managed favorably with endoscopic removal.

A case report of malignant paraganglioma with hepatic metastases / 대한내과학회지

We report a case of malignant paraganglioma with hepatic metastases. A 70-year old woman developed huge hepatic tumor 2years after complete resection of the retroperitoneal paraganglioma. CT imaging of abdomen revealed huge hepatic masses, which had not been found previously. A needle biopsy on the liver was performed, resulting in a diagnosis of malignant paraganglioma. These tumors are usually benign but can occasionally produce local and distant metastases. Development of metastatic localizations is the only formal proof of malignancy as histology cannot distinguish between benign and malignant paragangliomas. Surgery is the basis of treament and should be performed early in the operable course. Both chemotherapy and radiotherapy could be given, but satisfactory outcomes were not obtained. We suggest that close investigations for metastasis in patient with paraganglioma, seemed benign initially, as well as periodic follow up examinations should be emphasized.

A case of malignant acanthosis nigricans associated with gastric adenocarcinoma / 대한내과학회지

The new onset of acanthosis nigricans in an adult-especially when the lesions appear on mucosal membranes such as the lips, periocular areas, and anus-may be indicative of an underlying tumor. Adenocarcinoma of the gastrointestinal tract is the most common malignancy-most often cancer of the stomach. A 72 years old female had disseminated, symmetrically distributed, brownish black pigmentation and papillary hypertrophy on the intertriginous and flexural areas for 12 months, and gastric adenocarcinoma was confirmed during the evaluation of internal malignancy. The cutaneous finding of acanthosis nigricans was a significant cutaneous marker of internal malignancy in this case.