Abstract
A 53-year-old man with the chief complaint of narrow stools was diagnosed with sigmoid colon cancer after a detailed examination. The patient had also been diagnosed with antiphospholipid syndrome (APS) at the age of 36 years, resulting in a history of pulmonary embolism. The patient was taking oral warfarin potassium to prevent embolism due to APS, and had received unfractionated heparin therapy in the perioperative period. Under heparinization, single-port laparoscopic sigmoidectomy for sigmoid colon cancer was safely performed with no apparent intraoperative bleeding. Heparinization was restarted on postoperative day 1, and warfarin potassium was restarted on postoperative day 3. The patient was discharged on postoperative day 13 with no apparent thrombosis or hemorrhage. We herein report the use of single-port laparoscopic sigmoidectomy for the treatment of sigmoid colon cancer in a patient with APS. For high-risk patients, single-port laparoscopic surgery for colorectal cancer can be an optional treatment based on sufficient experience with this procedure.