Kolodziejczak M, Sudol - Szopinska I. The usefulness of transrectal endosonography in differentiating an anal abscess from a rectal carcinoma. A case report. Radiol Oncol [Internet]. 2005 Dec. 1 [cited 2026 Jun. 17];39(4). Available from: https://www.radioloncol.com/index.php/ro/article/view/1281