Metastatic Malignant Tumor of the Anus
A metastatic malignant tumor of the anus occurs when cancer originating in the anal region spreads to distant organs such as the liver, lungs, or…
Localized Malignant Tumor of the Anus
A localized malignant tumor of the anus, commonly referred to as anal cancer, is an early-stage malignancy confined to the anal canal or perianal skin.…