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Erdheim-Chester disease has always been considered a distinct lipoidosis based on clinical and radiographic criteria. Pathologically, it has been indistinguishable from Hand-Schüller-Christian disease. Analysis of the 15 reported cases lends some doubt as to the diagnostic criteria. A new case is presented that strongly suggests that Erdheim-Chester disease(More)
The most widely accepted and propagated theory of neurotrophic joint pathogenesis is the neurotraumatic one. Seldom published and little known is the neurovascular theory. To gain better understanding of the pathogenesis, we reviewed radiographs of 91 neurotrophic joints with attention to the particular joint affected, the type of changes present(More)
The MR images of 112 soft-tissue masses of various causes were retrospectively reviewed. Pathologic diagnosis by biopsy was available in 96 cases. Diagnosis in the remaining 16 cases was established by characteristic radiographs, CT scans, and/or arteriograms, in conjunction with appropriate history and clinical follow-up. All masses were evaluated with(More)
A study was performed to determine the frequency of periosteal reaction associated with chondroblastoma, to investigate the underlying pathophysiology of the periosteal reaction, and to postulate the clinical importance of this radiographic observation. Two hundred fourteen histologically proved chondroblastomas were reviewed and observed for the presence(More)
Erect (luxatio erecta) and superior glenohumeral dislocations are extremely uncommon. In luxatio erecta, the humeral head is subglenoid or subcoracoid just as in the more common anterior dislocation, but the shaft of the humerus is parallel to the spine of the scapula, not parallel to the chest wall as seen in the anterior type. Superior dislocations have(More)
Numerous methods for reading abnormalities of rheumatoid arthritis in hand and wrist radiographs have been proposed over the past several decades. There are many differences among these methods, one of the more striking of which is the variation in the number of joints that are scored. In this study, we tested the number of joints that need to be read in(More)