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Article
May 1992

Solitary Reticulohistiocytosis (Reticulohistiocytoma) of the Skin in Children: Report of Two Cases

Author Affiliations

First Department of Dermatology and Department of Pediatric Dermatology University of Milan 20122 Milan, Italy

Arch Dermatol. 1992;128(5):698-699. doi:10.1001/archderm.1992.01680150132024
Abstract

To the Editor.—  Reticulohistiocytosis (RH) represents the following spectrum of clinical entities: the solitary form (reticulohistiocytoma), the diffuse cutaneous form without systemic involvement, and multicentric RH with systemic involvement. All of the variants of RH are extremely rare in children.1 Just three cases of multicentric RH and one case of diffuse, purely cutaneous RH have been reported in children.2-5

Report of Cases.—Case. 1.—  Three months after onset, a 9-year-old boy presented with an asymptomatic nodular lesion on his scalp. The physical examination revealed a dark red, well-circumscribed, firm, dome-shaped, smooth-surfaced nodule that was 8 mm in diameter. The patient underwent surgery, after the routine laboratory investigations led to the suspicion of a Spitz nevus.

CASE 2.—  An 11-year-old boy was sent to our dermatology department for a rapidly growing solitary tumor on his back. His mother had noticed

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