Transactions . covered with fibrinopurulent exudate. The venous sinuses are free. Eoef oftympanum is intact; there is no evidence of extension ofthe ])urulet)f intiammafion thi-ough the petrous bone or thedura. Projecting from th(^ ])osterior sui-face of the petrous boneis a nodular tumor mass. IHV, ui. m. by 19i/> m. m. Thetumor i)rojects <S ui. m. beyond th(^ inner table, replacingthe bone and the dura at this point. The upper margin ofthe tumor extends over the internal auditory meatus, butdoes not reach the tentorium. The iiodular surface oF tlietumor is smooth and is reddened and va
Transactions . covered with fibrinopurulent exudate. The venous sinuses are free. Eoef oftympanum is intact; there is no evidence of extension ofthe ])urulet)f intiammafion thi-ough the petrous bone or thedura. Projecting from th(^ ])osterior sui-face of the petrous boneis a nodular tumor mass. IHV, ui. m. by 19i/> m. m. Thetumor i)rojects <S ui. m. beyond th(^ inner table, replacingthe bone and the dura at this point. The upper margin ofthe tumor extends over the internal auditory meatus, butdoes not reach the tentorium. The iiodular surface oF tlietumor is smooth and is reddened and vascularized. It isnowhere adher-ent to the cerebellum, the opposing surfa((of which is normal, but for the meningitis. On sectionini; the sjXcimen after decalcification tlieinvolxement of the bone is much iiioio extensive than theprojecting ])ortion of the tumor seemed to indicate. The *Krom ratliulofjieal Laboratory of Massachusetts Charitable Eyeand Kar Tnfirmaiy. OF BONK. 541. 1,. Filtli mrve. Seventh-eighth l-iS. 1- A. Secoml m D. Tumor. iriMiiangioeiidothelioma of petrous bone (outlined in white) present-in>4 in posterior fossa. The iipp- • trin of the tumor involves theiniTnal auditory ni<atus.
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Keywords: ., boo, bookcentury1800, bookdecade1860, booksubjectear, bookyear1868
