Hemosiderotic fibrohistiocytic lipomatous lesion: early pleomorphic hyalinizing angiectatic tumor?

Pathol Int. 2006 May;56(5):283-6. doi: 10.1111/j.1440-1827.2006.01955.x.

Abstract

Hemosiderotic fibrohistiocytic lipomatous lesion (HFLL) and early pleomorphic hyalinizing angiectatic tumor (PHAT) are characterized histologically by an admixture of fat, moderately cellular fascicles of hemosiderin-laden spindle cells growing in a perivascular, periadipocytic and septal pattern, as well as the presence of macrophages and chronic inflammatory cells. In contrast to a suggested reactive nature of HFLL, PHAT is regarded as a non-metastasizing tumor of uncertain lineage in the recent World Health Organization classification of soft tissue tumors. Reported herein is the case of a 47-year-old woman with an unencapsulated and irregularly circumscribed recurring lesion in the ankle/foot region that developed following ankle distortion and that fulfills histological criteria for both HFLL and early PHAT. In summary, the present case suggests a reactive over-neoplastic nature of HFLL and confirms profound histological similarities with early PHAT. Until more data become available on the biological potential of HFLL/early PHAT, radical surgical excision and follow up of the patient remains the best treatment option.

Publication types

  • Case Reports

MeSH terms

  • Angiofibroma / metabolism
  • Angiofibroma / pathology*
  • Angiofibroma / surgery
  • Ankle
  • Biomarkers, Tumor / metabolism
  • Female
  • Hemosiderin / metabolism
  • Hemosiderosis / metabolism
  • Hemosiderosis / pathology*
  • Histiocytoma, Malignant Fibrous / metabolism
  • Histiocytoma, Malignant Fibrous / pathology*
  • Humans
  • Lipids / analysis
  • Lipoma / metabolism
  • Lipoma / pathology*
  • Lipoma / surgery
  • Middle Aged
  • Neoplasm Recurrence, Local
  • Soft Tissue Neoplasms / metabolism
  • Soft Tissue Neoplasms / pathology*
  • Soft Tissue Neoplasms / surgery
  • Treatment Outcome

Substances

  • Biomarkers, Tumor
  • Lipids
  • Hemosiderin