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Cutaneous meningioma underlying congenital localized hypertrichosis
P F Peñas1, M Jones-Caballero, A Amigo
1Department of Dermatology, Hospital de la Princesa, Universidad Autónoma, Madrid, Spain.
Journal of the American Academy of Dermatology
|February 1, 1994
Abstract:
A 28-year-old man had a circumscribed hypertrichotic area on the left lumbar region since birth. A biopsy specimen showed numerous normal-appearing hair follicles and arrector pili muscles. In the subcutaneous layer a mass of dense collagenous connective tissue formed the background in which ill-defined foci of meningothelial cells in nests and pseudovascular spaces were seen. Collagenous structures (pseudopsammoma bodies), some of which showed calcification (psammoma bodies), were also seen. A diagnosis of cutaneous meningioma was made.