Adenocarcinoma is the cancer of anal gland or anal sac and is an invasive disease that is usually fatal. It is normally seen as a rectal growth or tumor and that proliferates to the lymph nodes. It is usually malignant and spread quickly to other areas of the body. If detected in time surgical removal of the tumor can help to improve the chances of survival.
The tumors are mostly small. In addition to the visible tumor other symptoms like constipation or obstipation, anorexia, polydipsia, and lethargy may be observed.