. Tumours, innocent and malignant; their clinical characters and appropriate treatment. nective tissue (stroma) entering into itscomposition must also be taken into account. In manyadenomas the epithehal element is the most conspicuous; inothers the connective tissue is out of all proportion to theepithelium, and occasionally preponderates to such a degreethat the tumour from some writers receives the misleadingname of adeno-sarcoma. When the epithelium-lined spacesare distended with fluid, the tumour is termed a cysticadenoma (adenocele). The source of this fluid is of someinterest, because a
. Tumours, innocent and malignant; their clinical characters and appropriate treatment. nective tissue (stroma) entering into itscomposition must also be taken into account. In manyadenomas the epithehal element is the most conspicuous; inothers the connective tissue is out of all proportion to theepithelium, and occasionally preponderates to such a degreethat the tumour from some writers receives the misleadingname of adeno-sarcoma. When the epithelium-lined spacesare distended with fluid, the tumour is termed a cysticadenoma (adenocele). The source of this fluid is of someinterest, because adenomas are similar in structure to thegland in which they arise (Fig. 146), yet they are unable to 248 ADENOMA OF MAMMA 249 furnish the secretion pecuhar to the gland. In the case ofadenomas growing from mucous membrane— the rectaland uterine adenomas—the glandular pits furnish a per-verted secretion. In the case of the thyroid gland, the adenoma is so en-capsuled that the secretion furnished by the gland-tissue ofthe tumour cannot escape, and, slowly accumulating, converts. a^a=S^ Fig. 146.—Section of an adenoma from a cMlds rectum. {Highly magnified.) the adenoma into a cyst. This occurs also in the mamma ;but it will be shown in connexion with adenomas of thisgland that the fluid sometimes escapes by the natural duct. Adenomas may arise at any point in the mucous mem-brane of the gastro-intestinal tract, and they do not, as a rule,attain big dimensions. The adenoma that Lexer removedfrom the stomach of an adult, which was as big as a childshead, is very exceptional; it grew, by a stalk as thick as twofingers, from the gastric mucous membrane near the pylorus. Adenomas exhibit pecuhar characters, and occasion dis-turbances which vary with the gland in which they arise; 250 EPITHELIAL TUMOURS it will therefore be convenient to consider each varietyseparately. It will be useful to point out that althoughadenoma and carcinoma may, and often do, co-exist in thesame gla
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectneoplasms, bookyear19
