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K F Konerding

Publications and source records attributed to K F Konerding.

9 recordsLinked to original sources
PubMed1988

Detection of obstructive uropathy by bone scintigraphy.

We prospectively evaluated routine bone scintigraphs to determine the prevalence of radiotracer retention in the renal collecting system, and to test the reliability of this finding as an indicator of obstructive uropathy. Post-diuretic renal washout was also measured, to evaluate the use of this procedure after bone scintigraphy. Stasis occurring only in the supine position was excluded by obtaining upright images. The findings on bone scintigraphy were compared with the results of renal sonography. Patients showing persistent pelvicaliceal concentration in the upright position after bone scintigraphy were found to have evidence of obstructive uropathy by sonography or other studies. Furosemide administration was followed by washout of the bone tracer from all kidneys with proven partial ureteral obstruction. Persistent renal pelvicaliceal concentration, in upright images after bone scintigraphy, appears to be a reliable indicator of obstructive uropathy. However, measurement of post-diuretic renal washout, after bone scintigraphy, does not reliably detect obstructive uropathy, and may be misleading if interpreted in the same way as the standard diuretic renogram.

Aged↗
PubMed1981

Bead-chain cystourethrogram: an evaluation.

The role of cystourethrography in the evaluation of urinary incontinence is controversial. This study evaluates the significance of 5 radiologic landmarks described in the literature as characteristic of stress urinary incontinence. It was expected to determine how often these landmarks were read similarly by independent observers and whether these radiologic findings in patients with stress urinary incontinence differ from those in patients with idiopathic detrusor instability. Eight-three cystourethrograms of patients having either stress urinary incontinence of idiopathic detrusor instability were reviewed. Three radiologists interpreted 5 radiologic landmarks on each study. Lack of identification and of agreement in interpretation by all 3 investigators varied from 19.3 to 54.2%. There were no statistically significant difference in the distribution of radiographic characteristics between patients with stress urinary incontinence and those with idiopathic detrusor instability.

Adult↗
PubMed1980

Computed tomography versus angiography in the localization of pheochromocytoma.

We report eight patients studied by computed tomography (CT) and arteriography and one patient studied by CT only and compare the value of both methods in the preoperative localization of pheochromocytoma. Single adrenal tumors were found in six adults (four were right sided and two were left sided). A 15-year-old child had bilateral adrenal tumors, and a 12-year-old child had a left adrenal tumor. An extraadrenal pheochromocytoma was found in another adult patient. Computed tomography demonstrated all but one tumor (a right adrenal lesion measuring 2.5 cm in the child with bilateral pheochromocytomas, both well shown by angiography). Arteriography, including subtraction films, demonstrated all but one tumor (an avascular extraadrenal pheochromocytoma measuring 4 x 8 cm well shown by CT). We believe that both CT and angiography contribute significant information in the preoperative evaluation of patients suspected of harboring a pheochromocytoma.

Adolescent↗
PubMed1980

Computed tomographic detection of pelvic and inguinal lymph-node metastases from primary and recurrent pelvic malignant disease.

Computed tomography (CT) detected enlarged pelvic nodes in 32 of 127 patients (25%) with carcinoma of the cervix, bladder, or prostate. Pelvic or inguinal lymph nodes were confirmed pathologically in 35 patients. CT was true-positive in 17 of 20 patients with lymph-node metastases (sensitivity, 85%), false-negative in 3 or 20 patients (15%) with metastases, true-negative in 10 or 15 patients without metastases (specificity, 67%), and false-positive for lymph-node metastases in 5 of 15 patients (33%). CT was correct in 27 of 35 patients (77%). Detection of external iliac-, obturator-, and inguinal-node metastases by CT is discussed.

Female↗
PubMed1979

Angiographic diagnosis of a bleeding jejunal diverticulum.

The authors report on the preoperative diagnosis of a bleeding jejunal diverticulum by selective arteriography. The angiographic findings, as well as the difficulties of the intraoperative localization of bleeding jejunal diverticula, are discussed.

Aged↗
PubMed1979

Evaluation of retroperitoneal hemorrhage by computed tomography before and after translumbar aortography.

Twenty patients were prospectively studied by computed tomography (CT) before and after undergoing translumbar aortography (TLA). Changes indicative of retroperitoneal bleeding were depicted by CT in all 20 patients despite the predominantly small size of the hematomas. CT scans obtained within two hours after TLA demonstrated: (a) thickening of the diaphragmatic crura, (b) enlargement of the left psoas muscle, and (c) obscuration of the aortic outline by soft-tissue density. Follow-up scans at 24 hours (10 patients) and one week (3 patients) revealed marked decrease in abnormalities, suggesting rapid resorption of the hematoma.

Aged↗