Migration of calcium deposits into subacromial-subdeltoid bursa and into humeral head as a rare complication of calcifying tendinitis: sonography and imaging.
Calcifying tendinitis of the shoulder is a common condition characterized by the deposition of calcium, predominantly hydroxyapatite crystals, in the rotator cuff. A rare complication of this condition is the migration of calcium deposits from tendons, usually the supraspinatus, into the subacromial-subdeltoid bursa or into the humeral greater tuberosity. These complications are responsible for intense acute shoulder pain and functional disability. Patient anamnesis and clinical symptoms must be considered to make the diagnosis, but imaging, particularly sonography, is often necessary, showing a typical presentation related to the locations of calcium deposits. We present sonographic and other imaging features of subacromial-subdeltoid bursitis and humeral osteitis related to the migration of calcium.
IRCCS Foundation, San Matteo Medical Center, Institute of Radiology, University of Pavia, Viale Camillo Golgi 19, 27100 Pavia, Italy.
Valeria
V
Della Valle
IRCCS Foundation, San Matteo Medical Center, Institute of Radiology, University of Pavia, Viale Camillo Golgi 19, 27100 Pavia, Italy.
Emilio Maria
EM
Bassi
IRCCS Foundation, San Matteo Medical Center, Institute of Radiology, University of Pavia, Viale Camillo Golgi 19, 27100 Pavia, Italy.
Fabrizio
F
Calliada
Calcifying tendinitis; Humeral osteitis; Shoulder pain; Sonography; Subacromial–subdeltoid bursitis