title: Calcium Pyrophosphate Dihydrate Crystal Deposition Disease of the Sternoclavicular Joint.
abstract: Deposition of calcium pyrophosphate dihydrate (CPPD) crystals in the articular structures affects predominantly temporomandibular, knee, hip, spine, and wrist joints, and is a rare condition, often mimicking malignancy. Sternoclavicular joint is extremely rarely involved. We present a patient with swelling of the right upper extremity, in whom on computed tomography a mass posterior to the sternoclavicular joint causing compression of the brachiocephalic vein was detected. A modified resection arthroplasty was performed, and the histopathological findings revealed massive deposits of CPPD in the articular cartilage. To our knowledge, there is only one similar case published in the literature.
authors.affiliation: Department of Cardiothoracic Surgery, University of Duesseldorf, Duesseldorf, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Borowski
authors.affiliation: Institute of Pathology, University of Duesseldorf, Duesseldorf, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Heikaus
authors.affiliation: Department of Cardiothoracic Surgery, University of Duesseldorf, Duesseldorf, Germany.
authors.forename: Muhammed
authors.initials: M
authors.lastname: Kurt
keywords: osteoarthritis; resection arthroplasty; sternoclavicular joint; thoracic surgery