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Case Reports
. 2015 Oct 7;7(3):287-91.
doi: 10.1159/000440856. eCollection 2015 Sep-Dec.

Koebner Phenomenon and Mycosis Fungoides

Eve Lebas  1 , Florence Libon  1 , Arjen F Nikkels  1
Affiliations
Case Reports

Koebner Phenomenon and Mycosis Fungoides

Eve Lebas et al. Case Rep Dermatol. .

Abstract

Mycosis fungoides (MF) is the most frequent type of primary cutaneous T-cell/NK-cell lymphoma. The Koebner phenomenon is defined as the appearance of cutaneous lesions on previously noninvolved skin following trauma and is observed in a series of cutaneous diseases including psoriasis, lichen planus, viral warts, molluscum contagiosum, etc. In this case report, 3 patients with longstanding MF are presented, the 1st with the appearance of a circumscribed early-stage type MF lesion rapidly following a surgical excision of an infundibular cyst, the 2nd with the appearance of a unique unilateral palmar tumoral MF lesion at the pressure site of a crutch, and the 3rd presented localized MF early stage lesions at the friction site of a belt. This report suggests that some MF patients may experience Koebner phenomenon-induced MF lesions and that MF should be added to the long list of skin diseases potentially exhibiting the Koebner phenomenon.

Keywords: Isomorphic effect; Koebnerization; Mycosis fungoides; Primary cutaneous T-cell/NK-cell lymphoma; Traumatism.

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Figures

Fig. 1
Fig. 1
Early-stage MF surrounding a recent surgical scar.
Fig. 2
Fig. 2
Palmar tumoral MF at the pressure site of a crutch.
Fig. 3
Fig. 3
Early-stage MF localized at the friction site of a belt.
See this image and copyright information in PMC

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