The pathology and surgical treatment of tumors . fests more or less swelling before its lymphangiectatic charactercan be discerned. Microscopically, lymphangioma of the tongue,a comparatively frequent affection, appears in the form of a sym-metrical swelling of the tongue, while the same affection of the skinbegins in the subcutaneous connective tissue as a softer swelling withill-defined borders. The loose connective tissue is oedematous, and 459 46o PATHOLOGY AND TREATMENT OF TUMORS. only in cases where large quantities of clear lymphatic fluid escapescan we suspect the existence of dilated
The pathology and surgical treatment of tumors . fests more or less swelling before its lymphangiectatic charactercan be discerned. Microscopically, lymphangioma of the tongue,a comparatively frequent affection, appears in the form of a sym-metrical swelling of the tongue, while the same affection of the skinbegins in the subcutaneous connective tissue as a softer swelling withill-defined borders. The loose connective tissue is oedematous, and 459 46o PATHOLOGY AND TREATMENT OF TUMORS. only in cases where large quantities of clear lymphatic fluid escapescan we suspect the existence of dilated vessels. In specimens that aresomewhat finer, spaces can be seen traversing the tumor, while thedelicate walls of the ectatic lymphatic vessels and cysts collapse sothat the openings in the vessels cannot be seen. Microscopical exam-ination, unless carefully conducted, may lead to errors in diagnosis, asthe specimens often present more the appearance of hyperplasia of thetongue than that of dilated lymph-channels. In lymphangioma of the ^- r^^-. FiG. 324 —Lymphangioma of the skin ; X 375 (Surgical Clinic, Rush Medical College, Chicago): a, connec-tive-tissue reticulum ; b, round cells (lymphoid cells); c, lymph-space: d, blood-vessels. tongue young muscle-fibres arc met with, which proves that the mus-cular tissue is also increased in quantity. In the subcutaneous tissuethe growth of lymphangioma is attended by an increase of connectivetissue (Fig. 324). The subcutaneous lymphangioma differs from elephantiasis arabiimby the tumor being composed of new lymphatic channels instead ofdilated diseased pre-existing vessels, as is the case in of the tongue (Fig. 325), or, as it is called, macroglossia,is always a congenital tumor. It commences with an enlargement ofthe ; the veins are thin-walled, but a new tissue-product L YMPHANGIOMA. 461 cannot be recognized so far. On the contraiy, the new lymph-spacesare dilated and are paved with numero
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectneoplas, bookyear1895
