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Toshiro Goto, MD; Sanetomi Eguchi, MD; Tetsuji Ueda, MD

Arch Otolaryngol. 1968;87(5):547-549.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

CASES of conductive hearing loss that have been caused by anomalies of the ossicle chain are grouped together.

The group, however, includes cases of entirely different causes. One such case was that reported by the author in 1956¹ in which he described the ossicle fixed to the epitympanum arising from pneumatization anomaly in the epitympanum.

In this article the author presents six more cases of a similar type.

Report of Cases

CASE 1.—This 23-year-old man gave a history of a 15-year gradual development of hearing loss in his left ear without any previous ear disease. Otoscopic examination showed slight inward depression in the tympanic membrane. Roentgenograms showed well-pneumatized mastoids. Audiologically, there was a high degree conductive hearing loss (Fig 1, top left) that resembled otosclerosis.

At surgery, scarcely any space was visible in the roof of the epitympanum because of air cell formation in the epitympanum. The malleus head . . . [Full Text PDF of this Article]

Author Affiliations
Nagasaki, Japan

From the Department of Otolaryngology, Nagasaki University, School of Medicine, Nagasaki, Japan. Dr. Eguchi is now at the Central Institute for the Deaf, St. Louis.

Footnotes
Accepted for publication Dec 19, 1967.

Reprint requests to 7-1, Sakamoto-machi, Nagasaki, Japan (Dr. Eguchi).

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