title: Painless shoulder mass.
authors.affiliation: Rheumatology Clinic, Department of Internal Medicine, Medical School, University of Ioannina, 45110 Ioannina, Greece.
authors.forename: Spyros
authors.initials: S
authors.lastname: Nikas
authors.affiliation: Rheumatology Clinic, Department of Internal Medicine, Medical School, University of Ioannina, 45110 Ioannina, Greece. Electronic address: adrosos@cc.uoi.gr.
authors.forename: Alexandros A
authors.initials: AA
authors.lastname: Drosos
mesh_terms: D000368:Aged; D001182:Arthroscopy; D003937:Diagnosis, Differential; D045888:Ganglion Cysts / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D008297:Male; D019152:Paracentesis / Q000379:methods; D012785:Shoulder Joint / Q000000981:diagnostic imaging / Q000473:pathology*; D014463:Ultrasonography