Painful Hyperplasia and Hypertrophy of Pacinian Corpuscles in the Hand: Report of Two Cases With Immunohistochemical and Ultrastructural Studies, and a Review of the Literature

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Hypertrophy and hyperplasia of pacinian corpuscles in the hand are very rare, with only 29 cases previously published. We describe two new cases in middle-aged patients whose chief complaint was progressive digital pain. Immunohistochemical and electronmicroscopic investigations indicated that the lump replicates the structure of enlarged pacinian corpuscles and should not be considered as a real tumor, nor connected to neurofibromatosis. No recurrence was observed after surgical excision. Although local trauma was encountered in 55% of the reported cases, the pathogenesis of such a lesion is still speculative.

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