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Kikuchi-Fujimoto disease mimicking tuberculous lymphadenitis
Yu Kurahara1, Kazunobu Tachibana, Kenji Tezuka
1Department of Internal Medicine, National Hospital Organization Kinki-Chuo Chest Medical Center, Japan.
Abstract:
A 28-year-old woman was referred to our hospital for treatment of tuberculous lymphadenitis, after presenting with fever, left cervical lymphadenopathy, and a positive interferon-gamma release assay (QuantiFERON®-TB Gold In-Tube; QFT) result. Surprisingly, biopsy specimens of the cervical lymph nodes showed necrotic lesions with prominent nuclear debris and a proliferation of histiocytes, consistent with Kikuchi-Fujimoto disease (KFD). A diagnosis was made of KFD complicated by latent tuberculosis infection (LTBI), and all symptoms had resolved completely two months post-diagnosis. KFD may be misdiagnosed as tuberculous lymphadenitis, and antibiotics unnecessarily prescribed. Careful attention should therefore be paid when diagnosing cervical lymphadenopathy.
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