GRANULOMATOUS SLACK SKIN IN CHILDHOOD

Granulomatous slack skin is an uncommon cutaneous T-helper cell lympho ma closely related to mycosis fungoides. To the best of our knowledge this disease has not been previously described in children. We report on an 11-year-old boy who presented with painless slack skin masses in the neck, right axilla and arm, anterior wall of the abdomen, both in guinal regions, and the malleolar and dorsal aspects of the feet. The disease started 3 years earlier with erythematous lesions on the neck and wrists. Histologic examination of a specimen from the abdominal ma ss revealed an extensive lymphoid infiltrate with scattered multinucle ated giant cells extending from the papillary dermis to the subcutis. The lymphoid cells showed the following immunophenotype: CD43+ (MT1), CD45+, CD45RO+, CD20-. The phenotype of the giant cells was lysozyme p ositive, CD68+ and Mac387-. The tumoral lymphoid cells had clonal rear rangement for the gene of the beta chain of the T-cell receptor (Cbeta TCR). The disease could be controlled with systemic glucocorticoids, D ue to the presence of many histiocytes arranged In aggregates in the p apillary and mid-dermis, this case was initially considered to be a cu taneous form of histiocytosis. We recommend deep and extensive biopsie s in patients with slack skin disease.