title: Adhesive capsulitis mimicking metastasis on 18F-FDG-PET/CT.
abstract: A 70-year-old woman with squamous cell carcinoma of the lung and chronic lymphocytic leukemia/small lymphocytic lymphoma underwent PET/CT for initial staging. There was avid focal asymmetrical uptake at the left shoulder, concerning for metastasis. Magnetic resonance imaging performed for further evaluation showed an enhancing soft tissue process at the rotator interval. Clinical notes indicated a 6-month history of progressive left shoulder pain and limited range of motion. The magnetic resonance imaging appearance and patient's symptoms were characteristic of adhesive capsulitis. We describe a new location of benign FDG avidity at the rotator interval due to adhesive capsulitis that can mimic neoplasm.
authors.affiliation: From the *Department of Diagnostic Radiology, The University of Texas, MD Anderson Cancer Center, Houston, TX; †Department of Diagnostic Radiology, National Cancer Institute, Cairo University, Cairo, Egypt; and ‡Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX.
authors.forename: Usama
authors.initials: U
authors.lastname: Salem
authors.forename: Liping
authors.initials: L
authors.lastname: Zhang
authors.forename: Jeffrey L
authors.initials: JL
authors.lastname: Jorgensen
authors.forename: Rajendra
authors.initials: R
authors.lastname: Kumar
authors.forename: Behrang
authors.initials: B
authors.lastname: Amini
mesh_terms: D000368:Aged; D002062:Bursitis / Q000000981:diagnostic imaging*; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging*; D005189:False Positive Reactions; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging*; D064847:Multimodal Imaging; D009362:Neoplasm Metastasis / Q000000981:diagnostic imaging; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals; D012785:Shoulder Joint / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18