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Asymptomatic Plaque on the Chin of a 10-Year-Old Girl
Edward M. Fannon, DO;
Howard Pride, MD
Oak Street Pediatrics, Titusville, Pa (Dr Fannon), and Geisinger Medical Center, Danville, Pa (Dr Pride)
Arch Dermatol. 2000;136:1263-1268.
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REPORT OF A CASE
A 10-year-old white girl presented with a 4-year history of a lesion on her chin. Over the past year, she noticed darker, longer hairs emanating from the lesion, but it was otherwise asymptomatic. Her medical history was unremarkable, and there was no pertinent family history.
On physical examination, there was an approximately 1-cm, yellowish, barely raised, ill-defined plaque on the patient's chin, with some slightly coarse, blond hairs arising from it (Figure 1). A punch biopsy specimen was obtained (Figure 2).
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Figure 1.
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Figure 2.
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What is your diagnosis?
Diagnosis: Striated muscle hamartoma.
Histopathologic examination revealed a fan-shaped array of vertically oriented skeletal muscle fibers in the lower dermis. An additional tightly clustered fascicle of these fibers was observed at the deep margin, and there were isolated, vertically oriented, additional skeletal muscle fibers in the region of the eccrine glands.
Striated muscle hamartoma . . . [Full Text of this Article]
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