Abstract 1. 1. Foreign bodies which erode or rupture into the abdominal cavity require surgical intervention within six hours after manifestation of symptoms. 2. 2. Self-introduced foreign bodies can usually be diagnosed by digital palpation and proctoscopic examination; roentgen study of the condition is a valuable adjunct. 3. 3. Greater caution should be exercised when introducing thermometers, enema tips and other appliances into the rectum. Nurses, orderlies and assistants in physiotherapy should have precise knowledge of the anatomy of the rectal ampulla and of the anal canal in order to preclude accidents. 4. 4. The indiscriminate use of rectal dilators and the wholesale practice of colonic irrigations by the general public are dangerous practices. 5. 5. Perianal discharges of unexplained origin, sudden changes in bowel habits as well as acute abdominal symptoms call for thorough proctologic examination on the basis of a carefully collected history.