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Article
May 1996

Cutaneous Lymphomas Consist of a Spectrum of Nosologically Different Entities Including Mycosis Fungoides and Small Plaque Parapsoriasis

Author Affiliations

Department of Dermatology Gloriastrasse 31 CH-8091 Zürich, Switzerland

Arch Dermatol. 1996;132(5):567-572. doi:10.1001/archderm.1996.03890290101014
Abstract

BROCQ IN his article on parapsoriasis,1 based on Unna's original observation,2 describes a distinct small plaque form characterized by well-defined plaques, 2 to 6 cm in diameter (plaques circonscites, assez bien limitées, de 2 a 6 cm de diametre).

This disease has been recognized since then as an entity by many authorities in both dermatology and dermatopathology.3-6 Ackerman et al7-9 claim that small plaque (digitate) parapsoriasis (SPP) must be mycosis fungoides (MF). Haeffner et al10 came to the conclusion that some cases of SPP show a dominant T-cell clone (results confirmed by further unpublished data). Burg and Dummer11 state that SPP is an "abortive" cutaneous T-cell lymphoma (CTCL) kept in a biologically silent stage, but it is not MF.

IS MF A CTCL?  Mycosis fungoides can be defined as a peripheral non-Hodgkin's T-cell lymphoma initially and preferentially presenting in the skin, showing

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