Identifier: breastitsanomali00deav (find matches)
Title: The breast: its anomalies, its diseases, and their treatment
Year: 1917 (1910s)
Authors: Deaver, John B. (John Blair), 1855-1931
Subjects: Breast Breast X-rays Breast Diseases Breast Neoplasms Radiotherapy
Publisher: Philadelphia, P. Blakiston's Son & Co
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons

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f ducts and connective tissue, it is easy toconceive that the ordinary fibro-adenoma results from uniform growth of both paren- 446 THE BREAST chymatous and peri-ductal tissue; that pure adenoma and adeno-fibroma (the lattercharacterized by preponderance of parenchymatous over peri-ductal tissue) result fromrapid growth of the parenchyma as contrasted with the peri-ductal tissue, and that peri-ductal fibroma results from the preponderance of the growth of the peri-ductal tissue overthe parenchymatous tissue. When the increased peri-ductal tissue surrounds the tubuleconcentrically, the tumor may be called peri-canalicular fibroma; when it grows morerapidly close to the tubules and less rapidly away from them, so that the inner (sub-epithelial) layers are thrown into folds, making traction and compression upon thetubules, into which rounded masses oir processes of the peri-ductal tissue seem to beforced, with the axis of the fibres radiating from the tubules—intra-canalicular fibroma.
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Fig. 162.—Lactating periductal fibroma simulating sarcoma. The nipple is obliterated as the resultof stretching of the tissues. In either variety, the peri-ductal tissue may maintain the normal tj^e and vary butslightly from that seen in normal breast tissue, or may be changed to an extent thatdestroys all resemblance. Thus, it is commonly edematous, and frequently mucoid incharacter. In the latter case it is desirable to modify the names and call the tumorsperi-ductal myxoma, or if it be desirable to use terms expressing the relationship of theperi-ductal tissue to the tubules, to canalicular, peri-canalicular and intra-canalicularmyxoma respectively. Through what seems to have been some misapprehension of thetrue nature of the change, large tumors of the intra-canalicular myxomatous type, inwhich tubules become distended into cysts and the intra-canalicular formations becomelarge enough to be easily seen by the naked eye, so that in a section of the fresh tumorthey can be seen to

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