. Diseases of the rectum and anus: designed for students and practitioners of medicine. he glands almostcompletely destroyed, and the blood-supply abundant. Thesame authorities, who have made an exhaustive study of thissubject, assert that malignant degeneration occurs in about one-half of the cases, the cancer being in most instances cylindric-celled epithelioma, and that the cancerous transformation isusually antedated several years by polyposis. Contrary to this,Hauser reports that in polyadenoma he was unable to findgoblet-cells, but cells which were similar in character to those EXPLANATI
. Diseases of the rectum and anus: designed for students and practitioners of medicine. he glands almostcompletely destroyed, and the blood-supply abundant. Thesame authorities, who have made an exhaustive study of thissubject, assert that malignant degeneration occurs in about one-half of the cases, the cancer being in most instances cylindric-celled epithelioma, and that the cancerous transformation isusually antedated several years by polyposis. Contrary to this,Hauser reports that in polyadenoma he was unable to findgoblet-cells, but cells which were similar in character to those EXPLANATION OF PLATE XXVIII The alveoli, containing raucous and granular detritus,are lined by columnar epithelial cells, the nuclei of whichare deeply stained and somewhat elongated. Many ofthe cells are distended with mucus, forming the so-calledgoblet cells. The cells rest on a basement membrane, which, how-ever, cannot be clearly recognized in the photograph, andthe supporting connective tissue is highly cellular, butnot more so than normally in the intestinal mucousmembrane. PLMTE XXUin. Rdenama of ths RBctum, [Magnification, 25D,] NON-MALIGNANT TUMORS 487 of cylindric-celled epithelioma; furthermore, the mucosa washypertrophied. Adenoma distohiensis is a form of adenomata made up ofglandular and granulation tissue and caused by the irritationinduced by the ova of the distoina hmnatobium. This parasiteis common in Egypt. The mature worms inhabit the trunk andbranches of the portal vein and the venous plexuses of theurinary bladder and rectum. It is deposited in the small veinsand tissues of the intestine, where it acts as a source of irri-tation. Polyps of this variety are common to Egypt, and werefirst described, in 1885, by Belleli, an Egyptian physician, whofurther reports that they may be multiple and occur in suf-ficient numbers to cause obstruction. Lipoma.:— Lipomata are tumors composed principally ofadipose tissue (fat). These growths occasionally occur in theperirectal t
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanusdis, bookyear1910
