Angiolymphoid hyperplasia with eosinophilia: a bone lesion pathologically resembling Kimura's disease of skin. A report of two cases.

Primary osseous lesions morphologically identical to the soft tissue entity known as angiolymphoid hyperplasia with eosinophilia were diagnosed by means of light and electron microscopy in two men, ages 20 and 27 years, respectively. The characteristics of the lesions were reactive rather than neoplastic. The soft tissue counterpart of this lesion has shown no indication of aggressive behavior nor of a potential to metastasize. Further investigations are necessary to determine whether a similar benign behavior can be established for angiolymphoid hyperplasia with eosinophilia arising primarily in bone.