[Mass of the pelvis minor--the coloproctological point of view].

The pelvis minor is cranial defined by the promontory and caudal by the pelvic diaphragm. It contains the pelvic organs like the inner genital organs of women, the urinary bladder the rectum and parts of the anus. The rectum is the origin of benign and malign tumors. Most frequently you find under these tumors the benign adenoma and hamartoma and the malign like the rectal and anal cancer. The further diagnostic work up and following therapy relates to the histology and the anatomical location of the tumor.