Nodular Hidradenoma (Clear Cell Hidradenoma)

  • Benign adnexal neoplasm presenting as solitary skin-colored nodule with no site predilection
  • Histology: well-demarcated nodular proliferation in dermis or subcutaneous tissue consisting of uniform basaloid cells (can have clear cell change), hyalinized collagen in stroma, ± sweat ducts within tumor