. Diseases of the rectum and anus: designed for students and practitioners of medicine. s twice removed them from the rectum, wherethey had become firmly encysted; in each case they caused agreat deal of pain, irritation, and sphincterismus. They werecomposed largely of bile-pigment, lime, and cholesterin. Theymay be single or multiple; occasionally they are found in amass, invested in a coating of fecal matter and salts, forminga concretion of sufficient size to fill the rectum, producing com-plete obstruction. (See section on examination of feces.) (635) 636 DISEASES OF THE RECTUM AND ANUS H
. Diseases of the rectum and anus: designed for students and practitioners of medicine. s twice removed them from the rectum, wherethey had become firmly encysted; in each case they caused agreat deal of pain, irritation, and sphincterismus. They werecomposed largely of bile-pigment, lime, and cholesterin. Theymay be single or multiple; occasionally they are found in amass, invested in a coating of fecal matter and salts, forminga concretion of sufficient size to fill the rectum, producing com-plete obstruction. (See section on examination of feces.) (635) 636 DISEASES OF THE RECTUM AND ANUS Hairy Concretions (Bezoars).i—Balls of hair (Fig. 208) in the stomach and intestines of inferior ani-mals who hck themselves. Similar concretions have been foundin the human subject, Ritchies case being the most celebratedof this class. He treated a girl for ileus and intestinal rupture,but autopsy proved that her suffering was caused by a massof hair completely filling and making a perfect mold of thestomach, and two smaller masses were found in the Fig. 208.—Hair Ball (Bezoar) from the Intestine of a Horse. Cases have been recorded where hair balls have found theirway into the rectum, caused by the disintegration of dermoidcysts of the ovaries. The author knows of a case where a tumor,the size of an orange, composed of finely masticated wood-fiber, was successfully removed from the intestine of a was caused by the chewing and swallowing of toothpicks: anot uncommon habit in certain parts of the West. 1 Jacobson (Trans. Med. Soc. State V. Y., page 386, 1901) reports the successfulremoval by laparotomy of a mass of hair which completely filled the stomach of ayoung girl. ENTEROLITHS AND CONCRETIOlS, S 637 Avenoliths (Oat-stones). — Concretions of this variety arerarely seen in this country, but are not infrequently met with inScotland. They are found principally in persons who consumelarge quantities of oatmeal; they occur less fre
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