Synchronic colorectal adenocarcinoma in a patient with attenuated familial adenomatous polyposis

case report

Abstract

Synchronic tumors correspond to 1.1 - 8.1% of the total number of colorectal neoplasms. Familial Adenomatous Polyposis (FAP) has an association described with synchronous colorectal cancer (CRC), unlike Attenuated Familial Adenomatous Polyposis (AFAP) in which such association is not well established. The synchronous CRC has greater involvement in a single segment of the colon, especially in the left colon. In this report, we describe the case of a 67-year-old patient who presented an unusual association: AFAP with synchronous CRC (adenocarcinoma of the cecum and inferior rectum invading the anal canal). It evolved well after surgical treatment and adjuvant chemotherapy. This study also highlights the places of affection presented by the patient, less frequent in the synchronous tumors, besides highlighting the importance of early diagnosis, since it can modify the extent of the surgical approach as well as the prognosis of the patient.