Diagnosis of Anal Cancer: Symptoms, Imaging, and Endoscopy.

Anal cancer is an uncommon disease in a sensitive region of the body that benefits from early and systematic workup and treatment. Main modalities for workup include history, physical examination, and MRI. PET scan and computed tomography scan are helpful in assessing spread of disease. High-resolution anoscopy may be useful in identifying precancerous lesions but come with a high-learning curve.