Rare Tumors Presenting as a Mastoid Mass

Figure 1

Right postauricular bulging mass which is asymptomatic, soft, and slightly movable (a). The temporal bone computed tomography shows a well-defined, low-attenuated, and nonenhancing mass (arrow) lateral to the mastoid process (b). Intraoperative view of a well-circumscribed intramuscular benign lipoma (c). A benign lipoma surrounded by muscle fibers. The tumor was composed of mature adipocytes without lipoblasts or cytologic atypia (d) (H&E × 100).

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