Hemosiderotic Fibrohistiocytic Lipomatous Lesion



Hemosiderotic Fibrohistiocytic Lipomatous Lesion


Julie C. Fanburg-Smith, MD

Aaron Auerbach, MD









Hemosiderotic fibrohistiocytic lipomatous lesion (HFLL) is composed largely of homogeneous fat with septal proliferations. It is not a mass-like lesion.






The septal proliferations are sometimes wispy, myxoid, spindled, inflamed, and hemosiderin-rich, as seen here.


TERMINOLOGY


Abbreviations



  • Hemosiderotic fibrohistiocytic lipomatous lesion (HFLL)


Synonyms



  • Hemosiderotic fibrolipomatous tumor is separate entity from pleomorphic hyalinizing angiectatic tumor (PHAT)


Definitions



  • Benign, probably reactive, lesion that occurs in ankle region of adult women



    • Usually secondary to ill-fitting shoes or other trauma


    • Composed predominantly of fat with septal spindled, inflammatory, and hemosiderin changes


ETIOLOGY/PATHOGENESIS


Typical Cause



  • Trauma or ill-fitting shoes

Jul 9, 2016 | Posted by in PATHOLOGY & LABORATORY MEDICINE | Comments Off on Hemosiderotic Fibrohistiocytic Lipomatous Lesion
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