Fig. 3From: A case of metastatic carcinoma of anal fistula caused by implantation from rectal cancer a Histopathology indicated that the rectal lesion was a moderately differentiated adenocarcinoma (H&E ×40). b Histopathology indicated that the anal fistula was found to be a moderately differentiated tubular adenocarcinoma (H&E ×40)Back to article page