Abstract
The case involved a 51-year-old woman undergone left colectomy for cancer of the descending colon. The histopathological diagnosis was moderately differentiated adenocarcinoma, pSS, ly0, v3, pNO, sNO, cPO, cMO, stage II. Adjuvant chemotherapy with tegaful uracil / calcium holynate was carried out. Abdomino-pelvic CT scan performed four months after the operation showed a low density area in the anterior regional branch of the right branch of portal vein. Abnormal uptake of FDG was revealed at the same area by 18FDG-PET-CT, but no other abnormal uptakes were demonstrated. Tumor thrombosis was diagnosed and right lobectomy of liver was performed. Macroscopic and histopathological findings showed no demonstrable metastatic foci in the hepatic parenchyma. The tumor thrombosis was composed of similar moderately differentiated adenocarcinoma to the primary lesion.
As tumor thrombosis of the portal vein unaccompanied by hepatic metastasis of colorectal cancer is extremely rare, this case is presented here together with some bibliographic comments.
