ABSTRACT
Background and purpose:In the primary cutaneous CD30 positive lymphoproliferative disorders, despite the common reports about the primary cutaneous anaplastic large cell lymphoma and lymphomatoid papulosis, such reports about the bordline disease-lymphomatoid papulosis (type C) were rare. This article was to introduce and discuss its clinical manifestations and morphological and immunophenotypic features. Methods:Based on the related literature, we reviewed the clinical,pathological and immunohistochemical features from one case presented in Huashan Hospital. Results:The patient, male, was 56 years old with systemic red papuloid skin lesions accompanied with pruritus, which were sporadic, chronic, recurrent and self-healing. The duration of the disease persisted more than 26 years. Recently, the multiple papuloid lesions developed to be agrias, ulcerations and black eschars. Histopathologically, besides the ulcerated epiderm exfoliation, there were medium and large atypical lymphocytes in? trating in dermis layer. These cells showed postive for CD30,TIA-1 and CD3, and negative for ALK and CD20. Conclusions:When diagnosing LyP (type C),a rare disease, we should differentiate it from the primary cutaneous anaplastic large cell lymphoma (C-ALCL) and systemic anaplastic large cell lymphoma involving the skin, and also combine the clinical and histopathological characteristics and immunophenotype to identify its defi nition and nature.