Transactions . nd in many casesfurnish the predisposing element. The presence of localized in-flammation or degenerative processes attacking either the layersof the bone itself, the diploe, the pericranial or dural cover-ing, must be assumed. What the real nature, however, of thesepathological changes may be, or, where their starting point is,remains to be determined. 554 : Ivory Exostosis of the Orbit. In a certain number of cases it would appear that theyare associated with and dependent upon low grades of periorbi-tis and ostitis, the result of chronic lesions of the adjacentsinuse
Transactions . nd in many casesfurnish the predisposing element. The presence of localized in-flammation or degenerative processes attacking either the layersof the bone itself, the diploe, the pericranial or dural cover-ing, must be assumed. What the real nature, however, of thesepathological changes may be, or, where their starting point is,remains to be determined. 554 : Ivory Exostosis of the Orbit. In a certain number of cases it would appear that theyare associated with and dependent upon low grades of periorbi-tis and ostitis, the result of chronic lesions of the adjacentsinuses. The accompanying report of a case of ivory exostosis of theinner wall of the orbit (right side) evidences that the bonygrowth was connected with pathological changes in the sinusfrontalis and anterior ethmoidal cells. The patient, however,never experienced evidences of periorbitis or acute trouble inthe sinus. He cannot recall to mind tenderness or discom-fort, much less, severe pain, in the region The discovery that the sinus frontalis was the seat of pro-nounced disease was only made at the time of the operation. Another case observed several years ago offered even moreconvincing proof of the causal relationship between exostosisand pathological changes affecting the frontal sinus and the an-terior and middle ethmoidal jceLs. A. T., aet. 27, for five or six years has had attacks of peri-orbitis at intervals of several months. The region affected wasthe upper and inner margin of the left orbit. During theseattacks, which often lasted several weeks, proptosis and diplopiawere prominent symptoms. The suffering was disclosed bulging of the inner wall of the orbit andexquisite tenderness to even the slightest pressure. Carefulexamination of the inner wall and roof of the orbit led to thediscovery of a crest-like projection suggesting an the subsidence of the acute symptoms its outline andprojections could be readily determined.
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectophthalmology, bookye
