title: Fat-Containing Hypermetabolic Masses on FDG PET/CT: A Spectrum of Benign and Malignant Conditions.
abstract: OBJECTIVE
  This article focuses on identifying the imaging appearances of hypermetabolic fatty masses and masslike lesions on PET/CT and understanding the diagnostic challenges radiologists may face while interpreting findings of these lesions on PET/CT. This article provides an approach to aid in the diagnosis of these lesions and the appropriate management of patients.
  
  
  CONCLUSIONS
  Both malignant and benign fat-containing masses and masslike lesions can show hypermetabolic activity on PET/CT. Although the differential diagnosis is broad, clinical history, anatomic location, and knowledge of anatomic variants and imaging features can help radiologists avoid misinterpretation of benign fatty lesions as malignancy.
authors.affiliation: 1 Department of Radiology, University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104.
authors.forename: Chara
authors.initials: C
authors.lastname: Rydzak
authors.affiliation: 1 Department of Radiology, University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104.
authors.forename: Anil
authors.initials: A
authors.lastname: Chauhan
authors.affiliation: 1 Department of Radiology, University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104.
authors.forename: Narainder
authors.initials: N
authors.lastname: Gupta
authors.affiliation: 2 Department of Nuclear Medicine, The University of Texas M. D. Anderson Cancer Center, Houston, TX.
authors.forename: Hubert H
authors.initials: HH
authors.lastname: Chuang
authors.affiliation: 3 Department of Radiology, Baylor College of Medicine, Houston, TX.
authors.forename: Eric M
authors.initials: EM
authors.lastname: Rohren
authors.affiliation: 4 Department of Diagnostic Radiology, The University of Texas M. D. Anderson Cancer Center, Houston, TX.
authors.forename: Priya R
authors.initials: PR
authors.lastname: Bhosale
mesh_terms: D000273:Adipose Tissue / Q000000981:diagnostic imaging* / Q000378:metabolism*; D003937:Diagnosis, Differential; D006801:Humans; D009369:Neoplasms / Q000000981:diagnostic imaging* / Q000378:metabolism*; D000072078:Positron Emission Tomography Computed Tomography
keywords: PET/CT; benign; fatty mass; hypermetabolic; malignant