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Temporal Bone Findings in Trisomy D
Haruo Saito, MD;
Yasumasa Okano, MD;
Mutsuhiro Furuta, MD;
Hitoshi Asamoto, MD;
Hiroko Fujita, PhD;
Tooru Takeuchi, MD
Arch Otolaryngol. 1974;100(5):386-389.
Abstract
Temporal bone findings in an infant with trisomy D (13-15) may be summarized as follows: The temporal bones showed multiple anomalies of the middle ear and the inferior part of the inner ear. The facial nerve bifurcated in the petrous portion on the right, and passed through the atretic external ear canal on the left. The stapes were of columellar shape on both sides. Slightly shortened bony cochlea housed a reduced clumped mound of Corti organ with good population of hair cells. The tectorial membrane and otolithic membrane of the saccule were encapsulated with a layer of thin cells. The finding regarding the tectorial membrane suggests that the patient would have had deafness of inner ear origin.
Author Affiliations
From the Department of Otolaryngology, Kyoto University Faculty of Medicine (Drs. Saito and Okano); Department of Pathology, Kyoto National Hospital (Drs. Furuta and Asamoto); Department of Child Health, Osaka City University (Dr. Fujita); and Department of Pediatrics, Osaka (Japan) Yodogawa Christian Hospital (Dr. Takeuchi).
Footnotes
Accepted for publication Dec 10, 1973.
Reprint requests to Department of Otolaryngology, Kyoto University Faculty of Medicine, Kyoto, Japan (Dr. Saito).
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