[A case of synchronous sigmoid cancer and ureter cancer].

A 78-year-old-man visited a nearby doctor for treatment of hepatitis C and high blood pressure.He was diagnosed with right hydronephrosis by abdominal echography conducted in follow-up of hepatitis C treatment in November 2011; he was then introduced to our hospital for close inspection and medical treatment.We observed wall hyperplasia and narrowing of the lumen in the central sigmoid part by contrast-enhanced computed tomography (CT).The right ureter at the L4/5 level showed wall hyperplasia and a deep color, and the right ureter, renal pelvis, and calix were expanded on the head side. By examination for CF, we observed a type 2 lesion in the sigmoid colon, and a biopsy showed well-differentiated adenocarcinoma. Based upon these findings, he was diagnosed with synchronous sigmoid colon cancer (cT4aN0M0, cStage II) and ureter cancer (cT2N0M0, cStage II); we performed laparotomy sigmoidectomy(D3 dissection)and full extraction of the right kidney urinary tract (lymph node dissection in front of the vena cava, the latter outside and between the aorta and vena cava). The postoperative course was particularly uneventful, and the patient was discharged from the hospital on day 38 after the operation. More than 2 years after the surgery, the patient exhibits no sign of sigmoid colon cancer or ureter cancer recurrence.