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Imaging Quiz Case 2
Arch Otolaryngol Head Neck Surg. 1999;125:349-352.
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A 54-YEAR-OLD man presented with fetid otorrhea in his left ear that had been developing over several years. It had been treated periodically with ear drops. Otoscopic examination revealed a tympanic membrane perforation in the posterosuperior portion, exhibiting a greenish pus with white keratinous scales. Pure tone audiometry indicated the existence of a conductive hearing loss in the left ear. The rest of the examination revealed no other abnormalities except uvular hypertrophy.
The computed tomograms (Figure 1 [top, coronal projection; bottom, axial projection]) demonstrated a straight-edged mastoid antrum with no periantral cells and erosion of the posterosuperior tympanic margin, with a soft tissue opacification. Inside, there was a round formation with a radiographic density similar to bone hanging from the tegmen antri by means of a pedicle.
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Figure 1.
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What is your diagnosis?
Rafael Ramírez-Camacho, MD, PhD;
Javier Vicente, MD;
Santiago Ramón y Cajal, MD, PhD
Madrid, Spain
Imaging Diagnosis: Osteoma of the mastoid antrum and cholesteatoma
Osteomas . . . [Full Text of this Article]
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