Asymptomatic extravasation of contrast material in the unused bladder.
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Contrast Media↗
Biomedical subjects
A Naimark
Publications and source records attributed to A Naimark.
Comparison of overhead and cross-table lateral views for detection of knee-joint effusion.
Prompted by the failure to detect a clinically evident knee-joint effusion on the cross-table lateral view of an injured patient, a prospective study was carried out to compare the routine overhead and cross-table lateral knee views for detection of joint effusion in 18 patients with acute knee trauma. In every case, the size of the effusion as determined by the "fat-pad separation sign" was greater on the overhead view (p less than 0.001). In three patients the effusion would have been missed radiologically had the vertical-beam projection been omitted. The authors conclude that the cross-table lateral view is less sensitive than the routine overhead lateral view in the detection of knee-joint effusions because of fluid shift into the lateral recesses of the suprapatellar bursa with the patient in the supine position. This phenomenon is demonstrated by arthrography and computed tomography in one patient.
Adult↗
Percutaneous treatment of small bowel obstruction due to a gastrostomy tube.
Inadvertent transmigration of a gastrostomy tube through a gastrostomy stoma occurred in a patient with a chronic neurological disorder. This led to small-bowel obstruction by the 30 ml balloon of the catheter. Percutaneous transabdominal puncture of the balloon was performed under fluoroscopic control using a long 22-gauge needle with immediate relief of the obstruction and subsequent passage of the catheter.
Adolescent↗
Diaphyseal presentation of Paget disease in long bones.
The authors report a case of polyostotic Paget disease including bilateral tibial involvement with sparing of the ends of each bone. Bone scans with technetium-99m-methylene diphosphonate demonstrated increased activity at the ends of the tibiae, suggesting atypical progression from the shaft toward the joint. This appears to be the first such report to include scintigraphic correlation.
Aged↗
Femoral neck erosions: sign of hip joint synovial disease.
Pathologic synovial processes in the hip joint can cause characteristic extrinsic erosions of the femoral neck, which in extreme cases produce an "apple core" appearance. Nine such cases of synovial diseases, including synovial osteochondromatosis, pigmented villonodular synovitis, rheumatoid arthritis, and amyloidosis, that demonstrate this radiographic finding are presented. The anatomic relations of the hip joint that result in this appearance, differential diagnosis, and radiographic techniques useful in diagnosis are discussed.
Aged↗
The disparate diameter. A sign of rotational deformity in fractures.
Although clinical assessment is usually better than radiographic evaluation in detecting rotational deformity at a fracture site, the forearm is an exception to this rule. A simple radiologic sign is here described which may uncover rotational fracture deformity: in the absence of comminution, whenever the diameter of a long bone changes abruptly across a fracture line, a significant rotational deformity must be considered. The basis for and applications of this sign are described.
Child↗
Case report 196: juxtacortical chondroma of C2.
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Adult↗
Nonunion.
Nonunion can be classified into hypertrophic and atrophic types solely on radiographic appearance. The etiology of the former is uncontrolled motion at the fracture site and of the latter is devitalization of bone at the fracture site. The orthopedic management of each type differs markedly. Early diagnosis and proper orthopedic management of nonunion are predicated on proper interpretation of the radiographs. The radiographic appearance of each type is discussed and the pathophysiology is explained.
Atrophy↗
Unusual roentgenologic manifestations of Meckel's diverticulum.
Five cases illustrating rare roentgenographic manifestations of Meckel's diverticulum are presented. Small bowel studies in 2 patients demonstrated a mucosal pattern identifiable as heterotopic gastric rugae, and in 2 other cases peptic ulcers were seen within the diverticulum. In 1 patient the diverticulum located in the right upper quadrant contained calcified enteroliths, and in another patient the diverticulum had fistulous communication with the appendix.
Adult↗
Inflatable penile implant for impotence: radiologic evaluation.
A hydraulic four-part prosthetic device to enable penile erection is being implanted into selected patients with organic or psychogenic impotence. By controlling a pump mechanism implanted into the scrotum, the patient can cause penile erection and its subsidence. Complications of the procedure are related to the surgery and the mechanics of the prosthesis. Radiography is invaluable in detecting cylinder ballooning, cylinder buckling, fluid leaks from the system, and tube kinking. Radiographic evaluation of the device is done with a single, carefully monitored film with the penis in the oblique position and, if necessary, additional films in the anteroposterior position with the prosthesis inflated or deflated.
Erectile Dysfunction↗
Intertrochanteric fractures: current concepts of an old subject.
The pre- or intraoperative classification of intertrochanteric fractures into stable and unstable is based on the status of the bone in the critical calcar femorale area and the obliquity of the fracture line. Modern management of unstable intertrochanteric fractures may include displacement at the fracture site, osteotomy, and fixation with a sliding screw system. These procedures produce postoperative films of an "unusual" appearance. The radiologist must understand the principles of classification and management to properly interpret the pre- and postoperative films.
Bone Screws↗
Primary pulmonary sporotrichosis.
The diagnosis of primary pulmonary sporotrichosis was made in a 53-year-old male alcoholic four years after initial presentation with cavitary lung disease. Clinical and radiologic awareness of this extremely rare entity will allow optimal study of bronchial secretions in the bacteriology laboratory. Important clues include: (1) exposure to thorny plants, (2) cavitary pulmonary disease resistant to both diagnosis and treatment, and (3) a history of alcoholism.
Alcoholism↗
The tumbling bolt: a new sign of deep soft-tissue abscess following Richards fixation.
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Abscess↗
Cardiac fibrosarcoma with bone metastases.
The diagnosis of a primary cardiac sarcoma with bone metastases was suspected in a previously normal patient because of the development of unremitting pulmonary edema and lytic bone lesions. Echocardiography substantiated the diagnosis, which proved at autopsy to be a primary fibrosarcoma of the heart. This represents only the third such case reported with bone metastases.
Bone Neoplasms↗
Nonventilatory functions of the lung. Summary.
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Bronchi↗
Are breast patterns a risk index for breast cancer? A reappraisal.
A retrospective study was designed to test J.N. Wolfe's theory that xeromammographic breast patterns can be used as a risk index for breast cancer. After analyzing breast types of all breast cancer patients over a 4 year period at the Jewish General Hospital, Montreal, who had xeromammography prior to surgery, we were unable to support Wolfe's hypothesis. We conclude that an inherent bias in the design of his experiment led to erroneous conclusions.
Breast↗
Effect of alveolar liquid on distribution of blood flow in dog lungs.
Previous studies have shown that a shift in blood flow away from edematous regions does not occur until the alveoli contain liquid. The present experiments were designed to examine the separate effect of air space liquid, air space plus interstitial liquid, and reduced lung volume on blood flow. We found that reduced lung volume was not associated with significant changes in blood flow and that no systematic change in blood flow occurred when alveoli were filled with isosmotic liquid (autologous plasma). However, when hyposmotic liquid (dilute plasma) was instilled so that both the air space and the alveolar wall interstitial space were filled, blood flow was systematically reduced. This suggested that interstitial liquid was responsible raising vascular resistance in these experiments and that it might also be important in raising local vascular resistance in pulmonary edema. This latter hypothesis was tested in isolated perfused lobes where rapid freezing and quantitative histology showed that the number of open capillaries was significantly reduced in the liquid-filled alveoli (P less than 0.001). These observations suggest that interstitial pressure rises in pulmonary edema with the result that the transmural pressure of the alveolar vessels falls and vascular resistance is increased.
Animals↗