Urinary tract resection is the only procedure that can cure colorectal cancer that directly invades the ureter. In these cases, open surgery is commonly used. Here, we describe our experience of a case of sigmoidectomy following Boari flap construction with single-incision laparoscopic surgery (SILS) for advanced colon cancer with ureteric invasion. A 68-year-old woman was referred to our hospital with left flank pain. Left hydroureteronephrosis was detected on ultrasonography. Computed tomography revealed a solid mass in the sigmoid colon and hydroureteronephrosis due to swelling of a mesenteric lymph node. Computed tomography detected no signs of distant metastasis. Colonoscopy revealed an ulcerated, bleeding, and stricturing lesion in the sigmoid colon, which was identified as an adenocarcinoma with a moderate degree of differentiation at histological examination. Under general anesthesia, the patient was placed in the Trendelenburg semi-right lateral position. An umbilical incision was made for the insertion of a single multichannel port for SILS. Sigmoidectomy and Boari flap reconstruction were performed. There were no perioperative complications. The total operating time was 572 minutes (including Boari flap procedure of 174 minutes), and estimated blood loss was 200 mL. Single-incision laparoscopic sigmoidectomy with Boari flap construction is technically feasible with sigmoid cancer and ureteral invasion.
A CASE OF GASTROINTESTINAL STROMAL TUMOR (GIST) OF THE SIGMOID COLON WITH ADVANCED COLON CANCER
