<unk>  is a field in medicine dealing with diseases and disorders of the rectum, anus, colon and pelvic floor. The word<unk>  is derived from the Greek words<unk> os, meaning anus or hindparts, and Logos meaning science or study.
Physicians specializing in this field of medicine are more commonly called colorectal surgeons, as the term<unk> st is outdated in the more traditional areas of medicine. A<unk> st should be a surgeon by training.<unk> sts often work closely with urologists.
In the United States, some surgeons (MDs) are certified by the American Board of Colon and Rectal Surgery, while some osteopathic surgeons (DOs), which are also equally licensed<unk> sts, are certified by the American Osteopathic Board of<unk> .
Proctology
Obstetrics
Hematology
Gynaecology
Otology
Diabetology
Urology
Oncology