Rhabdomyosarcoma of the clitoris

Excerpt

A healthy 2-year-old girl presented with a firm, mobile suprapubic mass that had been increasing in size over 8 months. Pelvic US revealed a 3.2-cm ovoid complex mass in the subcutaneous space overriding the mons pubis containing cystic and solid components (Fig. 1). Contrast-enhanced CT revealed a solid, homogeneously enhancing soft-tissue mass in the subcutaneous tissues extending into the mons pubis and clitoris (Fig. 2). Histology demonstrated sheets of small, round blue cells staining positive for myogenin, desmin, and vimentin and negative for CD99, cytokeratin, EMA, S-100, CD34, and smooth muscle actin. These features were consistent with rhabdomyosarcoma.

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