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  Vol. 135 No. 8, August 2009 TABLE OF CONTENTS
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  Clinical Problem Solving: Radiology
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Radiology Quiz Case 1

Natasa Klepac, MD; Sanja Hajnsek, MD, PhD; Iva Topic, MD; Kamelija Zarkovic, MD, PhD; David Ozretic, MD; Mario Habek, MD
Zagreb School of Medicine and University Hospital Center, Zagreb, Croatia

Arch Otolaryngol Head Neck Surg. 2009;135(8):828.

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

A 28-year-old man presented with a 2-week history of vertigo and tremor of his right arm. The symptoms were episodic. A neurologic examination revealed weakness and a postural and intentional tremor of the right hand. Audiometric evaluation demonstrated a downsloping sensorineural hearing loss in the right ear. Auditory brainstem evoked responses were also abnormal in the right acoustic pathway between the acoustic nerve and the inferior nuclei in the pons. The left ear was normal.

Computed tomography revealed a low-density mass measuring 5.0 mm in diameter in the right cerebellopontine angle (CPA). Magnetic resonance imaging without gadolinium revealed an expansive mass in the right CPA that was attached to the seventh and eighth cranial nerves. The mass was hyperintense on T1-weighted images (Figure, . . . [Full Text of this Article]



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