Journal of cutaneous medicine and surgery · 2009
Juvenile-onset hypopigmented mycosis fungoides mimicking vitiligo.
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Ngo Jennifer T, Trotter Martin J, Haber Richard M
Аннотация
BACKGROUND: Mycosis fungoides (MF) is the most common form of cutaneous T-cell lymphoma and typically affects older adults. It is estimated that less than 5% of MF cases are of juvenile onset. An uncommon hypopigmented variant of MF exists, which has been more commonly observed in dark-skinned individuals and predominantly in juvenile-onset cases.
METHODS: We describe an 8-year-old otherwise healthy Hispanic male who, by 6 months of age, had developed asymptomatic hypopigmented patches on the lower legs, thighs, and buttocks, which have evolved over the past 7 years. This condition had previously been misdiagnosed as vitiligo. Recent immunohistologic and molecular biology studies are consistent with MF.
RESULTS AND CONCLUSIONS: Given that hypopigmented MF is an uncommon condition, it may not be clinically suspected in the pediatric population. Histopathologic, immunophenotypic, and/or molecular biologic studies are sometimes equivocal, with findings similar to inflammatory dermatoses or autoimmune vitiligo, which may initially lead to a misdiagnosis, as in this patient's case.
METHODS: We describe an 8-year-old otherwise healthy Hispanic male who, by 6 months of age, had developed asymptomatic hypopigmented patches on the lower legs, thighs, and buttocks, which have evolved over the past 7 years. This condition had previously been misdiagnosed as vitiligo. Recent immunohistologic and molecular biology studies are consistent with MF.
RESULTS AND CONCLUSIONS: Given that hypopigmented MF is an uncommon condition, it may not be clinically suspected in the pediatric population. Histopathologic, immunophenotypic, and/or molecular biologic studies are sometimes equivocal, with findings similar to inflammatory dermatoses or autoimmune vitiligo, which may initially lead to a misdiagnosis, as in this patient's case.