A new, rotatable, lighted anoscope that offers an extremely wide variety of views of the anorectal area has been described. Incorporated in one instrument, are the desirable features of various types of existing anoscopes. Only one insertion of the anoscope is necessary. All contact edges have been rolled to avoid traumatizing the anal mucosa. A new type of rotating device, utilizing a pinion and ... [Show full abstract] gear arrangement is presented. The instrument is assembled or disassembled easily. The speculum and light carrier can be sterilized by autoclaving or boiling.