The pathology and surgical treatment of tumors . be made to 2inderstand that the price hepays for a radical operation includes invariably a pennanejit facialparalysis. Thyroid.—Carcinoma of the thyroid gland is very rare in theUnited States. Malignant disease of this gland is usually associatedwith adenoma or with miasmatic struma, and is consequently moreprevalent in localities where these affections are endemic. Carcinomaof the thyroid gland presents an additional interest from the fact thatsuch tumors are by no means limited to the thyroid gland. Accessorythyroid glands are quite frequently
The pathology and surgical treatment of tumors . be made to 2inderstand that the price hepays for a radical operation includes invariably a pennanejit facialparalysis. Thyroid.—Carcinoma of the thyroid gland is very rare in theUnited States. Malignant disease of this gland is usually associatedwith adenoma or with miasmatic struma, and is consequently moreprevalent in localities where these affections are endemic. Carcinomaof the thyroid gland presents an additional interest from the fact thatsuch tumors are by no means limited to the thyroid gland. Accessorythyroid glands are quite frequently found in the neighborhood of thethyroid, but thyroid tissue has a much more diffuse distribution indifferent parts of the body. It has been found in the bronchial glands,in the lungs, and in the bones in cases where the thyroid was enlarged,and its presence in these situations has been regarded as an exampleof metastasis. According to Plana, thyroid tissue occurs close to theaortic arch in the dog. The hyoid glands of Zuckerkandl and Kadyi,. 298 PATHOLOGY AND TREATMENT OF TUMORS. which are well described by Streckeisen, consist of remains of thethyroid duct and of gland-tissue, and may become the seat of malig-nant as well as benign tumors. Heterotopic tumors composed of thyroid tissue are excessively in 1880 described a case of pulsatile tumor of the skull in whichit was shown under the microscope that thetumor was composed of thyroid tissue (). Coats reported a similar case. Gussen-bauer found such a tumor in the such a matrix should occasionally serve asa starting-point of carcinoma should be remem-bered when a primary carcinoma is found intissues normally devoid of epithelial cells. Carcinoma of the thyroid gland is met withmost frequently in persons from thirty to fiftyFig. 184.—Microscopical ap- years of agc. The tumor infiltrates the gland- pearance of pulsatile tumor of the , • j r i. j-l. 1 j skull (after Morris). tissuc, and so
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectneoplas, bookyear1895
