A reference handbook of the medical sciences, embracing the entire range of scientific and practical medicine and allied science . nse, fibrous capsule, their con-sistency is firm and hard, or firm and elastic, and areirregularlv rounded or lobulated in shape. A section of the growth presents an appearancesimilar to the periductal fibromata, being firm andfibrous, and of a dull white, sometimes The ducts and acini are observed on the sur-face as many soft, glistening spots, which exist ingreater numbers tlan in the fibromata. Sometimesthe cut surface is covered with .slits,
A reference handbook of the medical sciences, embracing the entire range of scientific and practical medicine and allied science . nse, fibrous capsule, their con-sistency is firm and hard, or firm and elastic, and areirregularlv rounded or lobulated in shape. A section of the growth presents an appearancesimilar to the periductal fibromata, being firm andfibrous, and of a dull white, sometimes The ducts and acini are observed on the sur-face as many soft, glistening spots, which exist ingreater numbers tlan in the fibromata. Sometimesthe cut surface is covered with .slits, in other words,being of the intracanalicular type. The small cystsare filled with either a serous-like fluid or the contentsmay be rather thick or nidtaceous in character. As just remarked, the chief point of differencebetween these tumors and the periductal fibromatalies in their relatively large epithelial composition ascompared to the fibrous tissue they contain, togetherwith the active growth of the former element. Thetumor tissue has a lobular arrangement, especially soin the larger growths. Like the periductal fibroma,. Fig. U2G.—Papillary Cjstadenoma; Villous appearances. (Massachusetts General Hospital, R. ) the stroma consists of a loose, cellular fibrous tissue,derived from the periductal connective tissue, andwithout round cell infiltration. Two separate typesare recognized, as in the periductal tumors, the intra-canalicular and the pericanalicular. The pericanalicu-lar type seems to be the more common, and the sug-gestion has been offered tliat the pericanalicular typeof periductal fibromata is that from which the fibro-cystadenoma is chiefly derived. Epithelial-linedcysts are more frequent than in the fibroma; manyglands are lined with onlv one layer of epithelium,and in others there is a heaped-up arrangementforming papillary growths projecting into the lumenand wliich may even entirely choke the may be an adenomatous arra
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Keywords: ., bookauthorbuckalbe, bookcentury1900, bookdecade1910, bookyear1913
