Gynecological diagnosis . t tissue can be felt distinctly as a solid mass lying belowthe primary areola, and on squeezing it a fluid, which on microscopicexamination is indistinguishable from milk, can be the cause of the activity of growth in the breast of thenew-born infant may be, and many theories have been advanced,such as the existence of a chemical messenger in the circulation, AGE CHANGES 535 or an internal secretion from the maternal placenta,. the growthand the secretion cease soon after birth and the breast is quiescentuntil puberty approaches. The Breast at Puber
Gynecological diagnosis . t tissue can be felt distinctly as a solid mass lying belowthe primary areola, and on squeezing it a fluid, which on microscopicexamination is indistinguishable from milk, can be the cause of the activity of growth in the breast of thenew-born infant may be, and many theories have been advanced,such as the existence of a chemical messenger in the circulation, AGE CHANGES 535 or an internal secretion from the maternal placenta,. the growthand the secretion cease soon after birth and the breast is quiescentuntil puberty approaches. The Breast at Puberty.—At puberty the whole breast enlarges,the nipple becomes larger also, and is more sensitive; the areolaincreases in size and becomes pigmented to a moderate degree inbrunettes. Acini lined with epithelium are formed by bulbousoutgrowths from the ducts, and there is an increase both in thegland structures and the intralobar stroma. Lactation Hypertrophy.—The breasts become fuller, the veins are 1ST ^C i u <s&. Fig. 199.—Lymphatics of the Left Breast. (Sappey.) prominent, and the patient has a sensation of swelling of the breastsduring the; second month of pregnancy and later. The nipplesbecome prominent and the areola pigmented. In the wrinkled skinof the latter, the enlarged sebaceous glands, twelve to twenty innumber, stand up as little elevations. During the fifth monththere appears a secondary areola outside the primary areola,consisting of a network of pigmenl around light spots, each repre- 536 DISEASES OF THE BREAST senting a circle round the opening of a sebaceous gland. Colostrummay be pressed from the nipple by skillful stroking of the breasttoward the areola after the third month of pregnancy. Thesecretion of milk is not established until the end of the second dayof the puerperium. On section of a breast during lactation onenotes that the gland structure is enormously hypertrophied, theintralobular connective-tissue stroma having, to all intents andpurpose
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectwomen, bookyear1910
