Cholecystogastric fistula presenting as pyloric obstruction - a Bouveret's syndrome: A case report.

Background: Bouveret's syndrome is a rare (1%-4%) form of cholelithiasis characterized by gastric outlet obstruction. It presents mainly in elderly women with nausea, vomiting, and abdominal pain. On physical examination, common findings include dehydration signs such as tachycardia, decreased urine output, abdominal discomfort, and distention.

Endoscopic ultrasound-guided treatment of isolated gastric varices entwined with arteries: A case report.

Background: Interventional endoscopic ultrasound is clinically used for the treatment of isolated gastric varices (IGVs) owing to its precise visualization.

Case Summary: A 39-year-old man was diagnosed with a large IGV during a routine physical examination. Endoscopic ultrasonography showed gastric varices entwined with an artery, which greatly increased the difficulty of treatment.

Colonic mucosa-associated lymphoid tissue lymphoma: A case report.

Background: Mucosa-associated lymphoid tissue (MALT) lymphoma is a group of extranodal lymphomas that originate from B cells. Primary colonic MALT lymphoma is a rare disease, and there is no consensus on its endoscopic features and standard therapies. It is essential to raise awareness of colonic MALT lymphoma and choose the appropriate treatment.

Rectal tubular adenoma with submucosal pseudoinvasion misdiagnosed as adenocarcinoma: A case report.

Background: Differential diagnosis of colorectal intramucosal tumors from invasive adenocarcinoma is important in clinical practice due to the different risks of lymph node metastasis and different treatment options. The phenomenon of a colorectal adenoma with part of the gland entering the submucosa is known as pseudoinvasion of the adenoma, which is a major challenge for pathological diagnosis. It is essential to raise awareness of colorectal adenoma with submucosal pseudoinvasion clinically to avoid overtreatment.