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Am J Dermatopathol. 2012 Dec;34(8):e119-24. doi: 10.1097/DAD.0b013e3181c036de.

Atypical hydroa vacciniforme-like epstein-barr virus associated T/NK-cell lymphoproliferative disorder.

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Department of Dermatology, Gachon University of Medicine and Science, Gil Medical Center, Incheon, Korea.


Epstein-Barr virus (EBV)-associated T-cell/natural killer (NK)-cell lymphoproliferative disorders (EBV-T/NK-LPDs) accompany severe chronic active EBV infection (CAEBV) or comprise the CAEBV disease entity. The CAEBV disease entity has the common feature of lymphoproliferation of T or NK cells (primarily), and B cells (rarely), with chronic activation of EBV infection. The disease is rare and seems to be more prevalent in East Asian countries. The CAEBV disease entity encompasses heterogenous disorders, including hydroa vacciniforme (HV), hypersensitivity to mosquito bites, EBV-associated hemophagocytic syndrome, NK/T-cell lymphoma, and NK-cell leukemia. Atypical HV-like eruptions are present on sun-exposed and nonexposed areas with facial edema, fever, and hepatosplenomegaly, unlike classic HV. Recently, it has been suggested that classic HV and atypical HV-like eruptions are variants within the same disease spectrum of EBV-T/NK-LPD. We report a Korean boy with an atypical HV-like eruption and various systemic manifestations, including fever, sore throat, abdominal pain, headaches, seizures, and hematologic abnormalities for 2 years. After the initial mild eruption, which resembled a viral exanthem, ulceronecrotic skin lesions gradually developed and were associated with a high-grade fever and constitutional symptoms. He had a CAEBV infection, which showed a predominant proliferation of NK cells with high EBV DNA levels in the peripheral blood. However, in the skin lesions, there were nonneoplastic CD4 T-cell infiltrations predominantly showing a monoclonal T-cell receptor-γ gene rearrangement and positive EBV in situ hybridization.

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