A case of early-stage looked rectal cancer with a micropapillary component, lymph node metastasis and subserosal invasion

Abstract

An 84-year-old man showed positive fecal occult blood. Colonoscopy indicated an early-stage looked rectal cancer, and a low anterior resection was conducted. Histologically, the tumor was composed of moderately-differentiated adenocarcinoma with a micropapillary component in the mucosa. The tumor reached the subserosal layer, and lymph node metastasis was seen. It is suggested that colorectal cancer with a micropapillary pattern may represent a high biological grade and poor prognosis, like other organs.