• An inflammatory process affecting the anus. It is usually caused by sexually transmitted infectious agents and/or inflammatory bowel disease.
  NCI Thesaurus
  U.S. National Cancer Institute, 2021
• INFLAMMATION of the MUCOUS MEMBRANE of the RECTUM, the distal end of the large intestine (INTESTINE, LARGE).
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2021
• Inflammation of the mucous membrane that lines the rectum (the last several inches of the large intestine closest to the anus).
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021
• A disorder characterized by inflammation of the rectum.
  Common Terminology Criteria for Adverse Events
  U.S. National Institutes of Health, 2021
• Proctitis is inflammation of the rectal mucosa, which may result from infection, inflammatory bowel disease, or radiation. Symptoms are rectal discomfort and bleeding. Diagnosis is by sigmoidoscopy, usually with cultures and biopsy. Treatment depends on etiology.
  Merck Manuals
  Merck & Co., Inc., 2020
• Proctitis is inflammation of the lining of the rectum. The rectum is a muscular tube that's connected to the end of your colon. Stool passes through the rectum on its way out of the body.
  Mayo Clinic
  Mayo Foundation for Medical Education and Research
• Proctitis, acute inflammatory infection of the anus and rectum. The most common cause of proctitis is the direct inoculation of pathogenic microorganisms into the rectum during anal intercourse, but it may be caused by sexually transmitted diseases, Crohn disease, or ulcerative colitis. The usual...
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2020