Kimura disease presenting as a right lower limb soft tissue tumor: a case report

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Kimura disease (KD) is a rare chronic inflammatory disorder characterized by soft tissue masses, elevated eosinophil counts, and high serum IgE levels.
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The case report details a 53-year-old male with a localized soft tissue mass in the right lower leg, exhibiting normal eosinophil count and serum IgE.
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Histopathological examination revealed lymphocyte proliferation, eosinophilic infiltration, small vessel proliferation, and focal interstitial fibrosis, confirming KD.
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Immunohistochemical analysis showed intratumoral vascular proliferation, distinguishing KD from other eosinophilic disorders like angiolymphoid hyperplasia.
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The report emphasizes the importance of pathological examination in diagnosing atypical presentations of Kimura disease, particularly in extremities.

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