Case report: Locoregional (perineum and inguinal) recurrence after treatment of rectal cancer by low anterior resection.

This report presents a case of perineal and inguinal recurrence and metastasis after treatment of rectal cancer by low anterior resection. A 57-year-old Chinese woman was diagnosed with rectal cancer in September 2008. The tumor and metastasis were recurrent many times in the perineum and inguinal regions from first diagnosis to October 2011. Twelve surgeries were performed and several nodules were removed. Adjuvant radiation therapy and chemotherapy were also carried out. Pathological analysis indicated that most nodules were adenocarcinoma. The interesting finding was that this case did not seem to belong to any traditional rectal cancer metastasis pathway. This case is representative and worthy of further study to explore whether there is another rectal cancer metastasis pathway.