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Biomedical subjects

M Crade

Publications and source records attributed to M Crade.

46 records · Page 3Linked to original sources
PubMed1979

Acute focal bacterial nephritis (acute lobar nephronia).

Acute lobar nephronia (ALN) refers to a renal mass caused by acute focal infection without liquefaction. The radiological findings in 12 patients with 13 episodes of ALN are described. A characteristic combination of uroradiological findings is (a) a relatively sonolucent mass which disrupts corticomedullary definition on ultrasonography; (b) a solid-appearing mass on other uroradiological studies; and (c) a positive gallium image in the region of the mass, which may be associated with increased activity elsewhere in the same or opposite kidney. The angiographic finding of significant venous narrowing within the mass associated with only minor arteriographic abnormalities is characteristic of ALN as well.

Acute Disease↗
PubMed1978

Anatomy and pathology of the kidney by gray scale ultrasound.

Gray scale ultrasound can define intrarenal structures which could not previously be visualized. The normal calyces and infundibula within the renal sinus can be evaluated for abnormalities. Parenchymal anatomy (cortex, medulla, and arcuate vessels) of the right kidney is best demonstrated with the patient supine, using the liver as a window; anatomy of the left kidney is best appreciated using coronal scans in the right lateral decubitus position. Criteria and differential diagnosis of "Type I" parenchymal changes, in which the echo intensity within the cortex is increased, and "Type II" changes, in which there is a focal or diffuse disruption of normal renal parenchymal anatomy, are presented.

Adult↗
PubMed1978

Surgical and pathologic correlation of cholecystosonography and cholecystography.

To define the accuracy of varying ultrasonic patterns in the diagnosis of gallstones, the records of 145 patients with ultrasound examination of the gallbladder prior to cholecystectomy were reviewed. Three abnormal scan categories were established: category 1--shadowing opacities that move with gravity within the gallbladder lumen; category 2--nonvisualization of the gallbladder lumen; and category 3--nonshadowing opacities within the gallbladder lumen. The accuracy of these criteria for gallstone diagnosis was found to be 100%, 96%, and 61%, respectively. Overall accuracy was 96% for gallbladder disease, with a 4% false negative rate. Oral cholecystography demonstrated an accuracy of 93% in this series. A preoperative ultrasound diagnosis of gallstones should probably be limited to category 1 and 2 appearances only.

Cholecystography↗