Colorectal masses can be non-neoplasm, benign neoplasm, and malignant neoplasm. Diagnosis of colorectal mass can be done by examining a biopsy followed by a histopathological examination. The aim of thus study was to described the histopathology feature of colorectal mass biopsy in the Anatomic Pathology Laboratory of Arifin Achmad Regional Hospital in Riau Province January 2015 - December…