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Arch Otolaryngol Head Neck Surg. 1999;125:813-815.

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

A 17-MONTH-OLD boy was noted by his parents to have poor hearing since birth. The child did not have any of the stigmata of the high-risk registry for hearing loss except that his older brother also had bilateral sensorineural hearing loss. His parents were unsure whether he had any vestibular disturbances. Sound field testing demonstrated a downward-sloping moderate to severe hearing loss, which was confirmed by auditory brain evoked response testing, which revealed a bilateral flat moderate hearing loss. A computed tomographic scan of the temporal bone was obtained (Figure 1 and Figure 2).

Figure 1.

Figure 2.

What is your diagnosis?

Dennis Lee, MD; Stanley Stutz; James Coticchia, MD; Charles D. Bluestone, MD
Pittsburgh, Pa

Diagnosis Quiz Case 2: Large vestibular aqueduct syndrome (LVAS)

In 1978, Valvassori and Clemis¹ introduced the term LVAS, which was used to describe 50 patients with enlarged vestibular aqueducts, hearing loss, and vestibular symptoms. The incidence of this disorder has . . . [Full Text of this Article]

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