title: Atypical subcutaneous fatty tumors.
abstract: Atypical fatty tumors present problems of terminology and diagnosis. While atypical fatty tumors that are located in subcutaneous tissues have an extremely good prognosis, local recurrence and transformation to a higher grade tumor may occur. Allen et al document the morphologic features and behavior of 37 atypical subcutaneous fatty tumors and describe a system of grading. The commentary discusses the terminology of atypical fatty tumors, the relevance of the proposed grading system, and the significance of a spindle cell component in atypical subcutaneous fatty tumors.
authors.affiliation: Royal Hobart Hospital, Anatomical Pathology Department, Hobart Tasmania, Australia.
authors.forename: D
authors.initials: D
authors.lastname: Challis
mesh_terms: D005260:Female; D006801:Humans; D008067:Lipoma / Q000145:classification / Q000473:pathology*; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000473:pathology; D012878:Skin Neoplasms / Q000145:classification / Q000473:pathology*; D012983:Soft Tissue Neoplasms / Q000145:classification / Q000473:pathology*