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Although polyposis of the large intestine is generally considered a disease of children and young adults, there is little reference to the subject in pediatric literature. This, no doubt, is accounted for by the rarity of the condition, only a few cases in patients less than 14 years of age having been observed, and by the fact that the more refined proctoscopic and roentgenologic methods of diagnosis have not been generally employed. The subject of single and multiple polyps of the colon and rectum has received considerable attention from those interested in proctology and the clinical and surgical aspects of enterology. The present opinion seems to be that single polyps or polyps that occur in small numbers are of relatively common occurrence and differ from those making up the picture of generalized, disseminated polyposis which occurs relatively rarely. In 1895, von Port 1 reviewed fourteen cases of diffuse polyposis; in

The colon is a relatively frequent site for multiple polyps of the mucosa with and without chronic ulceration. The true polyp is composed of hyperplastic glandular mucous membrane projecting into the lumen of the bowel. In the literature are recorded cases of so-called pseudopolyposis lymphatica, 1 in which the mucosal projections are caused by underlying hyperplastic lymph follicles, but no cited instance has been found simulating the case to be reported, in which nodular polypoid projections into the colon were caused by a peculiar granulation tissue composed mostly of large mononuclear cells filled with what appears to be a specific infectious micro-organism. 2 It has not been possible to cultivate the bacillus associated with the lesion, but it is hoped that a record of the case may lead to an earlier recognition of the disease, so that its bacteriology may be studied with care. REPORT OF A CASE History and