. Tumours, innocent and malignant; their clinical characters and appropriate treatment. Fig. 17.—Osteoma in the left frontal sinus (anterior view). cranial cavity ; some of these have been reported in veterinaryliterature as ossified brains ! Osteomas at the margins of the external auditory meatushave been especially studied because they are apt to obstructthe meatus and cause deafness; when both meatuses are. Fig. 18.—Osteoma in the left frontal sinus (seen from below). {Mksckiii ofthe Royal College of Surgeons.) affected—and this is not rare—absolute deafness may is a curious fact
. Tumours, innocent and malignant; their clinical characters and appropriate treatment. Fig. 17.—Osteoma in the left frontal sinus (anterior view). cranial cavity ; some of these have been reported in veterinaryliterature as ossified brains ! Osteomas at the margins of the external auditory meatushave been especially studied because they are apt to obstructthe meatus and cause deafness; when both meatuses are. Fig. 18.—Osteoma in the left frontal sinus (seen from below). {Mksckiii ofthe Royal College of Surgeons.) affected—and this is not rare—absolute deafness may is a curious fact that osteomas at the margin of the audi-tory meatus have been observed in many different races of OSTEOMAS 37 men. Professor Sir William Turner has drawn attention toobservations of Seligmann, VVelcker, and Barnard Davis, andadded some of his own, concerning the presence of suchexostoses in certain deformed skulls described as TiticacasHuanakas, and Aymaras. Also in skulls from the MarquesasIslands, Sandwich Islands, Chatham Island, and New is not surprising that osteomas should arise from thewalls of the external auditory meatus when we rememberthe number of centres by which the periotic cartilage istransformed into bone, and the various ossific elements thatcome into relation with each other at this meatus. 2. Cancellous osteomas.—These tumours in structureresemble the cancellous t
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectneoplasms, bookyear19
