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Abstract Background Kimura’s disease is a rare, benign, chronic inflammatory disease that presents as painless, solid masses mainly affecting the deep subcutaneous areas of the head and neck, especially the salivary glands, parotid glands and nearby lymph nodes. It is characterized by elevated peripheral blood eosinophil and Immunoglobulin E (IgE) levels. Case presentation A 31-year-old Asian male presented with an orbital space-occupying lesion lasting for 1.5 years. Ten years prior, surgical excision of bilateral fossa cubitalis and groin masses was performed, and the pathological examination showed "lymphoproliferative disease". One year later, masses reappeared near the surgical sites; they grew slowly and shrank after glucocorticoid treatment. At this point, admission examinations showed in the peripheral blood an eosinophil proportion of 13.4%, a total IgE level of 26,900.00 IU/mL, prurigo present on the whole body, and multiple palpable masses near the bilateral fossa cubitalis and groin. The left eyeball was exophthalmic. The left elbow mass was excised, and the pathological examination confirmed Kimura’s disease. Oral glucocorticoid therapy is taken and tapering regularly. The eosinophil count returned to normal, the IgE level gradually decreased, the orbital space-occupying lesion and elbow and groin masses shrank significantly, and the whole-body skin prurigo disappeared. Currently, the patient has been in a stable condition for eighteen months. Conclusion Our case provides a novel insight that Kimura’s disease should be involved in the differential diagnosis of inflammatory lesion mass of orbit and also supports systemic regular glucocorticoid as a valuable therapy of such condition, but close follow-up and long-term observation are crucial. |
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