. Tumours, innocent and malignant; their clinical characters and appropriate treatment. Fig. 86. —Macroglossia in a girl aged 11. {After Humphrij.) The increase in the size of the tongue is not due toan overgrowth of its muscular substance, but is caused, asVirchow pointed out, by the formation of a lymphangeiomain connexion with the lingual mucous membrane. Recent observations have shown that there is anothercause of macroglossia, namely, plexiform neuroma affectingthe lingual and hypoglossal nerves (p. 143). 2. Cavernous lymphangeioma. — This species in its 164 GONNEGTIVE-TISSVE TUMOURS nake
. Tumours, innocent and malignant; their clinical characters and appropriate treatment. Fig. 86. —Macroglossia in a girl aged 11. {After Humphrij.) The increase in the size of the tongue is not due toan overgrowth of its muscular substance, but is caused, asVirchow pointed out, by the formation of a lymphangeiomain connexion with the lingual mucous membrane. Recent observations have shown that there is anothercause of macroglossia, namely, plexiform neuroma affectingthe lingual and hypoglossal nerves (p. 143). 2. Cavernous lymphangeioma. — This species in its 164 GONNEGTIVE-TISSVE TUMOURS naked-eye cliaracters resembles a lympliatic nseviis, but onmicroscopical examination it will be found to be identicalin structure with the cavernous nsevus, with the differencethat its cavities are filled with lymph instead of blood. Treatment.—-This is conducted on the same lines as forangeiomas. In the case of macroglossia, excision of theenlarged and protruding parts of the organ has been followedby permanent good Fig. 87.—Lymphatic cyst of the neck iu a child 2 years of age. 3. Lymphatic cyst.—This appears as a congenital swellingin the neck, axilla, and adjacent parts of the thoracic wall;it was formerly classed under the title hydrocele of theneck. Lymphatic cysts are easily recognized. They are alwayscongenital; even at birth they are sometimes of very largesize, and exhibit a- preference for the anterior triangle. Insome instances they extend into the axilla and superior medi-astinum, or project into the posterior triangle (Fig. 87).Their upward limit is, as a rule, indicated by the hyoid boue,but they have been known to reach as high as the parotid LYMPHATIC CYSTS 165 gland. The cyst may be unilateral or bilateral ; it mayconsist of a single cavity, or be multilocular and the variouschambers may intercommunicate. In size they vary greatly :
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectneoplasms, bookyear19
