Anal and Perianal Masses: The Common, the Uncommon, and the Rare

Abstract

A variety of tumors involve the anal canal because the anal canal forms the transition between the digestive system and the skin, and this anatomical region is made of a variety of different cells and tissues. Magnetic resonance imaging (MRI) is the modality of choice for diagnosis and local staging of the anal canal and perianal neoplasms. In this pictorial review, we demonstrate the MRI anatomy of the anal canal and perianal region and display the imaging spectrum of tumors in the region along with an overview of its management. Imaging appearances of many tumorlike lesions that can cause diagnostic dilemmas are also demonstrated with pointers to differentiate between them.

Keywords

anal - perianal - neoplasms - cancer - MRI

Note

A part of this article including images were presented as electronic poster with the same title during the 33rd Annual Meeting and Postgraduate Course of European Society of Gastrointestinal and Abdominal Radiology (ESGAR), 2022, and was selected as a recommended poster.

Publikationsverlauf

Artikel online veröffentlicht:
23. März 2024

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