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Cystoma of Tonsil

area. It contains a salivary gland (4 -5 by 3 5 by 1-5 cm.) which has a brownish-yellow lobulated cut surface, and a few lymphatic glands (up to 2 by 0-6 by 0-5 cm.). The remainder of the specimen is composed of adipose connective tissue and voluntary muscles. Microscopic: Chronic inflammatioil of four lymphatic glands. Enlargement of germ centres; proliferation and desquamation of endothelial cells of lymphatic sinuses. Infiltration of capsule with plasma cells. Specimen IV.-Tissue from left supraclavicutar regton, received November 8, 1928. S. D. 2658/1928. Macroscopic: In formalin, two masses, one consisting of a single large nodule (2-5 by 2 by 1-5 cm.), the other of two nodules held together by a little adipose connective tissue (larger nodule 1-3 by 1 by 0-8 cm.). The nodules are quite hard. They have a yellowish-white, smooth, shining, somewhat lobulated outer surface. The cut surface of the largest nodule is homogeneous and yellowish white, except for a few yellow areas and fine greyish sunken strands and an almost central pearly white depression (0-5 cm. diameter) from which radiate a few greenish-black streaks. The cut surfaces of the two adherent nodules show a similar appearance with a slightly softer, bright yellow area in the larger. Microscopic: Three secondary nodules of solid acinar, polygonal-celled and tubular, cubical and short columnar-celled carcinoma with a hyaline fibrous stroma. Mitotic figures are numerous. There are a few areas of necrosis in one nodule where the hyaline fibrous tissue is abundant. In the periphery of the nodules there are a few areas occupied by lymphocytes, but the structure of lymphatic gland cannot be distinguished.