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This case report is interesting since a survey of the literature did not reveal any record of a similar pathologic finding.
E. H., a white woman aged 26, sought examination July 26, 1941, because of a purulent odorous discharge from the right ear, as well as poor hearing and occasional bleeding since early childhood. Alternating periods of exacerbation and improvement followed rhinopharyngeal and sinal infections. Examination of the right ear revealed the following: The auricle and cartilaginous canal were normal. Some tenderness was present over the mastoid process. The posterior osseous canal wall showed a large defect through which a large vascular grayish blue bulge (anterior vertical part of the sigmoid sinus) projected into the lumen of the canal. Brownish red pigmentation with slight superficial ulceration, from which some bleeding occurred on mild manipulation, was also noted over this vascularity.
The cholesteatomatous process had destroyed part of the posterior canal
BERGER I. CHOLESTEATOMATOUS EXPOSURE OF THE SIGMOID SINUS THROUGH THE POSTERIOR OSSEOUS CANAL WALL. Arch Otolaryngol. 1943;37(4):565–566. doi:10.1001/archotol.1943.00670030577011
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