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Skin Appendage Disord. 2017 Oct;3(4):175-178. doi: 10.1159/000471855. Epub 2017 Apr 29.

A Case of Circumscribed Scalp Morphea with Perineural Lymphocytes on Pathology.

Author information

1
Dermatology Department, Ramón y Cajal Hospital, Madrid, Spain.
2
Department of Dermatology and Cutaneous Surgery, University of Miami, Miami, FL, USA.

Abstract

Scalp morphea presents as a scarring alopecia in en coup du sabre pattern. We report an unusual presentation of a round hairless patch of morphea on the occipital scalp present for 15 years. The scalp lesion aligned with 2 other hyperpigmented lesions of biopsy-proven morphea in the lower back. Pathology of horizontal sections from the scalp lesion showed follicular dropout, thickening of the collagen bundles, and preserved eccrine and follicular structures. Marked lymphocytic perineural infiltrate, a reported clue to the diagnosis of scalp morphea, contributed to the diagnosis. This case is unusual due to its rare clinical presentation. It also highlights the importance of recognizing histopathological clues for the diagnosis of uncommon scalp disorders.

KEYWORDS:

Alopecia; Cicatricial alopecia; Coup de sabre; Lymphocytic perineural infiltrate; Morphea; Scalp morphea; Scleroderma

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