Herpes Simplex Virus Necrotic Lymphadenitis Masquerading as Lymphoma.

In immunocompromised patients, the rapid development of lymphadenopathy could pose a few diagnostic challenges. This is important, especially with chronic lymphocytic leukemia and small lymphocytic lymphoma (CLL/SLL) which can manifest with the development of infections or may even progress with transformation into a more aggressive form of the disease. We report a case of a patient with CLL/SLL who presented with fever and worsening dyspnea as well as inguinal lymphadenopathy upon evaluation. The excisional biopsy of affected lymph nodes revealed herpes simplex virus lymphadenitis confirmed by immunohistochemical staining. Flow cytometry showed no progression to diffuse large B-cell lymphoma. This case highlights the importance of considering a broad spectrum of differential diagnoses when assessing lymphadenopathy in immunocompromised patients receiving active immunosuppressive therapy.

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Human subjects: All authors have confirmed that this study did not involve human participants or tissue. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work.