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Abstract
A twenty-year-old man developed pruritic papules on his right forearm on the 25th day after an allogeneic bone marrow transplantation from an HLA-matched related donor. The skin lesion turned out to be lymphomatoid papulosis, both histologically and immunophenotypically, not a GVHD skin lesion. Lymphomatoid papulosis is a chronic lymphoproliferative disease of the skin, characterized by recurrent crusts of pruritic papules, which initially appearing on the upper trunk and both extremities. The lesions heal spontaneously within 2～8 weeks, usually leaving slightly depressed oval scars. Histologically, the lesions show wedge-shaped dense dermal infiltrates of lymphoid cells, with numerous eosinophils, neutrophils and atypical lymphocytes. As much as 50% of the infiltrates show atypical lymphocytes, and the dermal vessels may show endothelial swelling, fibrin deposition and red blood cell extravasation. We are reporting a case of spontaneously healing CD56+ lymphomatoid papulosis, in the patient who received bone marrow transplantation, is reported.
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