Intra-articular elastofibroma of the shoulder joint.
A 19-year-old man presented with an elastofibroma in his left shoulder joint. The patient had had limitation of motion in his left arm for 3 years, especially when rotating internally. Radiography of his left shoulder showed bone erosion in the neck of the humerus. On MR imaging, a soft tissue mass was noted in the shoulder joint eroding bone. The mass showed similar signal intensity to that of surrounding muscles on T1- and T2-weighted images. At surgery, a soft, encapsulated mass was found attached to the subscapularis muscle. It was pathologically confirmed as an elastofibroma. This unusual manifestation of an elastofibroma is discussed.
Bae
Sang-Jin
SJ
Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnap-dong, Songpa-gu, Seoul 138-736, Korea.
Shin
Myung Jin
MJ
Kim
Sung Moon
SM
Cho
Kyung-Ja
KJ
D000328:Adult; D005350:Fibroma / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D012785:Shoulder Joint / Q000473:pathology* / Q000601:surgery; D012983:Soft Tissue Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery