1. Anal tumors;Albuquerque;Anorectal Disorders: Diagnosis and Non-Surgical Treatments,2019
2. Pathology of anal cancer;Hoff;Surg Oncol Clin N Am,2017
3. Anatomy and histology of the anus;Sundel;Anal Cancer: A Comprehensive Guide,2019
4. The American Society of Colon and Rectal Surgeons clinical practice guidelines for anal squamous cell cancers;Stewart;Dis Colon Rectum,2018
5. Lower gastrointestinal problems: anal cancer;Gallagher;Medical-Surgical Nursing: Assessment and Management of Clinical Problems,2016