Occasional cases in which S-1/CPT-11 therapy was effective have been recently reported. The patient's tumor became resectable despite the discovery of colon cancer associated with bone metastasis at the initial examination, offering hope for cancer patients.

Key Clinical Message A patient presenting to the emergency room with abdominal pain due to acidic cleaner ingestion, whether accidentally or intentionally, should undergo contrast‐enhanced computed tomography (CT). If no abnormalities are noted on CT early after ingestion, the patient should be reviewed with a repeat CT within 3–6 h.

Portal venous gas (PVG) generally suggests critically ill conditions such as severe bowel ischemia. We herein report a rare case of gallbladder torsion with PVG. An 88-year-old woman complained of right hypogastric pain. Ultrasonography (US) showed diffuse wall thickening of her gallbladder and mobile echogenic foci moving inside the portal venous branches. Computed tomography showed a thickened wall of the gallbladder with poor enhancement and tiny pockets of air in the portal venous branches (segments 4 and 5). There was no evidence of other visceral ischemia. She was diagnosed with necrotic cholecystitis and immediately underwent an emergency operation. We found a gangrenous gallbladder with 180° clockwise rotation along the longitudinal axis and performed cholecystectomy. We confirmed the disappearance of PVG with US after the operation. Her postoperative course was uneventful. Gallbladder diseases can produce PVG, and US might be a useful diagnostic modality to evaluate changes in PVG.

Urinoma is defined as an encapsulated collection of chronically extravasated urine, usually located in the perirenal space. Crohn's disease (CD) complicating urinomas is very rarely reported, and we encountered a case of urinoma with CD which was located in the retroperitoneal space. Case presentationA 44-year-old female complained of abdominal distention as well as frequent urination. Contrast-enhanced CT scan showed a giant cystic mass, barium enema indicated entero-rectal fistula, and DIP revealed rectovesical fistula.By conservative therapy, inflammatory findings were improved. However, an abdominal tumor was still observed.Therefore, we performed an operation including ileocecal resection, resection of the fistulas, and repair of the urinary bladder and the rectum. The postoperative course was uneventful and 37 months later after the operation, the patient has no complaints. ConclusionOur case is the first report of Crohn's disease associated with urinoma. We believe that surgical therapy may be effective for patients who have urinoma with Crohn's disease.

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