OSTEOMA of the mastoid process is infrequent;1 multiple osteoma occurring within the mastoid cavity is rare.2
REPORT OF A CASE
H. B. a white man aged 39, was admitted to the hospital because of acute nasopharyngitis. On routine examination, a swelling was noticed behind the right ear in the mastoid area (fig. 1). It was not painful or tender to touch; in fact, the patient was not aware of its presence. The auricle was pushed slightly forward. Both external auditory canals were dry and clean. Both drums were intact and had a normal appearance. Hearing was not affected in either ear. There was no history of any infection of the ear or of "ear trouble."Roentgenograms showed a well developed normal pneumatic mastoid bone on the left side. On the right, there was a large "expanding lesion," the size of the entire mastoid process, containing six separate small osteomas (figs.
MARROCCO WA. MULTIPLE OSTEOMA OF THE MASTOID CAVITY. Arch Otolaryngol. 1948;47(5):673–677. doi:10.1001/archotol.1948.00690030699011
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