RT Book, Section A1 Branecki, Chad E. A2 Cydulka, Rita K. A2 Fitch, Michael T. A2 Joing, Scott A. A2 Wang, Vincent J. A2 Cline, David M. A2 Ma, O. John SR Print(0) ID 1157394454 T1 Anorectal Disorders T2 Manual de Urgencias Médicas de Tintinalli, 8e YR 2018 FD 2018 PB McGraw-Hill Education PP New York, NY SN 9781456262211 LK accessmedicina.mhmedical.com/content.aspx?aid=1157394454 RD 2023/06/10 AB Anorectal disorders range from simple local disease processes to underlying serious systemic disorders. Most anorectal diseases originate in the anal crypts, glands, internal hemorrhoidal plexus, and external hemorrhoid veins. More serious life-threatening infections tend to lie in the deeper tissues such as the ischiorectal and pelvic-rectal spaces.