Biomedical subjects
Publications and source records attributed to D Resnick.
Jaccoud's aethropathy is a non-erosive deforming arthritis seen in rheumatic fever, systemic lupus crythematosis and ankylosing spondylitis. "Hook" erosions may occur on the radial palmar aspect of the metacarpal heads and can be differentiated from the marginal erosions of rheumatoid arthritis.
Pseudoarthrosis of the spine in ankylosing spondylitis consists of a fracture through the intervertebral disc and neural arch. There is vertebral body end-plate destruction with adjacent bony sclerosis.
An arthrographic appearance, confidently diagnosed as synovial chrondromatosis, showed no abnormality at surgery. This experience prompted further investigation which led to the conclusion that a normal variant of the suprapatellar pouch may be confused with synovial masses. Single or multiple pseudomasses in this region may relate to the presence of an embryonic remnant of the synovial folds, the plicae synovialis. If the finding is looked for, with careful arthrographic technique and palpation under fluoroscopic control, along with correlation with the clinical findings, unnecessary arthrotomy may be avoided.
Diffuse sclerotic bone lesions in the adult are commonly the result of metastatic disease. Carcinoma of the breast and prostate and Hodgkin's disease are the most prevalent underlying malignant processes. We describe a patient who had gastric carcinoma and early prominent diffuse sclerotic bone lesions and briefly review the literature.
Explore the source record for details and available documents.
The dorsal defect of the patella (DDP) is a benign lesion with specific radiographic features. Seven cases of DDP are reviewed; all 7 lesions were identical in location and radiographic appearance. The characteristic lesion is round and lytic, with well-defined margins; it is located in the superolateral aspect of the patella adjacent to the subchondral bone. Arthrography reveals intact cartilage. DDP may occur in both sexes and may be bilateral. It is often found incidentally on radiographs ordered for acute trauma. Its etiology is not known. Differential diagnosis is also discussed.
Explore the source record for details and available documents.
In addition to the standard views of the shoulder (external rotation, internal rotation, and axillary), a 40-degree posterior oblique and a 60-degree anterior oblique projection were used to evaluate 105 consecutive shoulder examinations. Of the 32 abnormal shoulders evaluated, the diagnosis was established 97% of the time with a single 40-degree posterior oblique view, as opposed to a 78% rate with the three standard views. The 40-degree posterior oblique view of the shoulder is especially useful in evaluating the glenohumeral joint.
Inflammatory or erosive osteoarthritis, in addition to the classical digital distribution, may involve the carpus. Characteristic carpal changes are restricted to the radial aspect of the wrist and consist of narrowing, eburnation, osteophytosis, and mild subluxation of the first carpometacarpal and trapezio-scaphoid joints. Radiographic findings and differential diagnosis are discussed.
Explore the source record for details and available documents.
Radiographic manifestations of the seronegative spondyloarthropathies superficially resemble the findings of rheumatoid arthritis although they differ in both distribution and pattern of disease. Ankylosing spondylitis has a predilection for the axial skeleton; psoriatic arthritis may involve distal interphalangeal joints; and Reiter's syndrome is most commonly associated with asymmetrical lower extremity alterations. The absence of osteoporosis and the presence of bony proliferation are also noted in these disorders. Sacroiliitis and spondylitis, which can be observed in any of these disease, may have distinctive features. In ankylosing spondylitis, bilateral saroiliac joint alterations and typical syndesmophytes are common; in Reiter's syndrome and psoriasis, asymmetrical saroiliac joint changes and bulky spinal outgrowths may be observed. The physician should be aware of typical roentgen findings in each of the spondyloarthropathies.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Five patients with single sclerotic vertebral body lesions had serial radiographs demonstrating no change in size of the radiodensities. Radionuclide bone imaging, obtained in 4 of these patients, showed no increased radioisotopic uptake in the areas in question. The absence of growth of the lesions on follow-up radiographs and the presence of negative bone scans support the diagnosis of enostoses of the spine. It is important for the radiologist to realize that benign sclerosis of a single vertebral body may simulate skeletal metastasis.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Cartilaginous (Schmorl's) nodes are related to prolapses of intervertebral disk material into the vertebral body. These nodes can be produced by any process which weakens either the cartilaginous plate covering the superior and inferior surfaces of the vertebral body or the subchondral trabeculae of the vertebra. Such processes include juvenile kyphosis, trauma, metabolic and neoplastic disorders, and degenerative disk disease. Radiographic abnormalities include indentations of vertebral outline and radiolucencies within the vertebral body with varying degrees of sclerosis. These can be readily differentiated from other vertebral alterations such as "butterfly", "fish", and "H" vertebrae.