Biomedical subjects
Publications and source records attributed to D H Gordon.
The angiographic signs of renal allograft rejection are usually diffusely seen throughout the kidney. Three cases of focal rejection are presented including one with histologic confirmation. Possible etiologic mechanisms are discussed. The presence of focal findings at angiography should not rule out the diagnosis of rejection.
Explore the source record for details and available documents.
The Cruveilhier-Baumgarten syndrome is a rare clinical entity that can be confirmed by angiography. Computed tomography can provide an alternative, noninvasive method of diagnosis as well as supply information relevant to the patient's portal hypertension.
The radiographic appearance of dense, linear calcifications in the soft tissues of the lower extremities in the region of the superficial femoral, greater saphenous, and popliteal veins is described. These calcifications are suggestive of venous thrombosis. In the appropriate clinical setting, confirmatory venography should be performed.
Explore the source record for details and available documents.
A right aortic arch may descend either to the right or left of the spine. When the aorta crosses from right to left posterior to the esophagus, the findings on plain chest film and barium swallow studies may simulate those of a mediastinal mass, especially in older patients. Although aortography is definitive, computed tomography can accurately display the retroesophageal aorta, allowing rapid and hazard free diagnosis.
Fifteen patients with primary renal disease and renal vein thrombosis who presented with the nephrotic syndrome were investigated venographically. In 46% of the patients the cavogram was normal. Selective renal venography is necessary in such patients because the course of patients with renal vein thrombosis and membranous glomerulonephritis is identical to that of patients with membranous glomerulonephritis alone. Eighty per cent of our patients had membranous glomerulonephritis; renal vein thrombosis is now thought to be secondary to this disease.
Explore the source record for details and available documents.
An angiographic study of a new operation for portal hypertension involving arterialization of the portal vein in combination with an end-to-side portacaval shunt is described. The angiographic appearances differ from those of end-to-side shunts alone. With the new operation there is, in particular, no significant change in the wedge pressure or in the hepatic artery size from preoperative to postoperative studies, and in the majority of patients, the liver size is also unchanged. The incidence of porto-systemic shunting from the portal vein to the low pressure caval system (66%) is lower than for end-to-side shunts alone. Changes are seen in the distal portal bed in the majority of cases.
Nineteen patients with 20 axillary-subclavian vein thromboses were examined by venography. In 70% the axillary and subclavian veins were involved in continuity. The innominate vein was seldom involved, although demonstration of this was difficult. In 50% of the patients the thrombosis was a secondary phenomenon associated with either breast carcinoma, central venous pressure lines, heroin addiction, or cervical rib.
Plague hemagglutinating antibodies to a titer of 1:1,024 were demonstrated in 6.6% of buffalo and 0.3% of elephant sera tested 1 year after a plague epidemic in the same area.
The patterns of collateral circulation which develop following obstruction of the inferior vena cava have been classically divided into three groups depending upon the level of obstruction, i.e., infrarenal, middle caval, and upper caval. The portal vein can play an active role at all three levels. Multiple potential routes to the portal vein are described and 6 cases are presented.
The measurement of supine pedal venous pressure as a screening test for deep venous thrombosis is re-evaluated. In 83 extremities studied in 50 patients, the false-positive rate was 62%, the false-negative rate 8%. Chronic venous disease, whatever its etiology but particularly in association with the post-phlebitis syndrome, can be a source of error in relying upon this measurement.
A complication of separation of a femoral artery catheter during withdrawal is described. Probable contributing factors and ways of avoiding this mishap are discussed.
Explore the source record for details and available documents.
A new operation for the treatment of cirrhosis and portal hypertension has recently been described involving arterialization of the portal vein in combination with an end-to-side portacaval shunt. We present, for the first time, the appearances at wedge hepatic venography. No significant change is seen in the wedge hapatic pressure as a result of this technique, and the sinusoidal pattern is preserved. Filling of the portosplanchnic collaterals is not as frequent as after end-to-side shunts alone, and the appearances seem to reflect improved sinusoidal perfusion. The clinical results have been encouraging.
Sonography was performed on 41 patients, 24 of whom were suspected of having abdominal aortic aneurysms and 17 of whom had symptomatic peripheral vascular disease. The accuracy of sonography in the diagnosis of aneurysms of the abdominal aorta was evaluated, and the instances in which angioggraphy contributed to the management of these patients was defined. Sonography is adequate for the diagnosis and management of many aneurysms of the abdominal aorta. Aortography is necessary when: (1) an inadequate study has been obtained, (2) the iliac arteries are not visualized, (3) renal or mesenteric artery involvement is suspected, (4) multiple or lobulated aneurysms are found, or (5) the aorta is very tortuous.