Biomedical subjects
Publications and source records attributed to H L Neiman.
Two cases of posttransplant renal lymphoceles were diagnosed and followed by ultrasound. Lymphocele formation is a significant but often not thought of cause in a rejectionlike picture. Because of its noninvasive nature, ultrasound is an ideal method to detect and follow this complication.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Five cases of beign renal adenoma were studied angiographically. The findings are presented along with a review of the literature. There were 4 males and 1 female ranging in age from forty-two to sixty-three years. Each presented with a mass on excretory urography, and 1 contained calcification. The largest two lesions showed circumferentially distributed vascular supply. Two lesions showed a faint homogenous blush on the nephrogram phase of the angiogram, and the firth lesion, which arose in the wall of a cyst, was angiographically silent.
Two cases are presented in which a serious contrast reaction was accompanied by a dense persistent nephrogram. This radiologic sign results from the patient's systemic hypotension and provides the physician with an opportunity for earlier, more effective therapy.
Angiographic features are described in 5 patients with peripancreatic lymphomas who initially presented with clinical features of primary pancreatic disease. Each patient demonstrated a large hypovascular mass with considerable displacement of pancreatic and peripancreatic arteries and associated compression of adjacent veins. Smooth arterial encasement was present in 2 cases. Signs of mass out of proportion to signs of invasion mitigated against the diagnosis of carcinoma in each case. Other differential diagnostic considerations are pancreatic pseudocyst and cystadenoma.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
PURPOSE: The authors present their experience with the nitinol Goose Neck snare system in the retrieval of retained foreign bodies in 20 patients. PATIENTS AND METHODS: Foreign bodies were located in the vascular system in 13 patients, urinary tract in four, biliary system in one, gastrointestinal tract in one, and the peritoneal space in one. All retrievals were performed with use of standard angiographic/interventional techniques. RESULTS: Success was achieved in all cases without attendant complications. Foreign bodies removed included catheter and guide-wire fragments, an embolization coil, broken or occluded double pigtail catheters, a Wallstent, and a surgical laparotomy sponge. CONCLUSION: All procedures were performed quickly, safely, and without difficulty. Because of its excellent torque control, positive grasping capacity, excellent radiopacity, lack of traumatic effect, and availability in different sizes appropriate for use in a wide variety of difficult anatomic spaces, the authors recommend that this device be considered the first choice for all foreign body retrieval procedures.
Two mammographic imaging systems (Xerox and Kodak Min-R) were evaluated. Three hundred consecutive mammographic examinations were performed utilizing both imaging systems. Results of these studies indicated equivalency of image detail at identical source-to-image receptor distance (SID). Patient exposure as measured by the thermoluminescent dose meter for Kodak Min-R system was approximately 25% that of Xeromammography system. Due to reduced power requirement, it is possible to increase the SID when Min-R system is employed for imaging. Improved geometric arrangement provided superior diagnostic images in 5.5% of 200 comparison cases.
Ultrasonography has not been utilized in the diagnosis of musculoskeletal disorders. However, the superficial location of tendons and ligaments lend themselves to evaluation by this modality. The ultrasonographic characteristics of the normal Achilles tendon are described in both the rabbit and man. The characteristic ultrasonographic findings after injury to the Achilles tendon are also determined. This imaging technique provides a sharp definition of the tendon and surrounding structures and easily demonstrates abnormalities. The superficially located quadriceps tendon is also well visualized by ultrasound and representative examples are shown. Ultrasound should be considered as another useful method for evaluation of these superficial musculoskeletal structures.
The CT and sonographic appearances of a case of retroperitoneal Castleman disease of the plasma cell type are reported along with angiographic correlation. In this case CT demonstrated a minimally calcified homogeneously enhancing retroperitoneal mass. Sonography showed the mass to be hypoechoic with good through transmission. The lesion was hypervascular with prominent early venous drainage on inferior mesenteric arteriography.