Abstract
A 75-year-old woman with loss of appetite and nausea underwent lower endoscopy, revealing a type 2 lesion with half the circumference raised in the sigmoid colon. Sigmoid colon cancer was diagnosed. Preoperative three-dimensional computed tomographic angiography (3D-CTA) showed the presence of a horseshoe kidney and three extra renal arteries-in the left kidney from the left common iliac artery, in the right kidney from the right common iliac artery, and at the isthmus from 3 cm under the inferior mesenteric artery branch of the aorta. The preoperative diagnosis was clinical stage cT3 colon cancer (SS), Circ, type 2, cN0, cH0, cP0, cM0, cStage II, and laparoscopic sigmoid colectomy was performed. Consulting the images from preoperative angiography allowed safe performance of the surgical procedure. To prevent intraoperative misidentification, 3D-CTA needs to be implemented preoperatively to ascertain the precise positional relationships between the extra renal arteries and inferior mesenteric artery, and the kidney.
