Paul Ross

An Evaluation of the Effectiveness of CT vs. Other Imaging Modalities in the Diagnosis of Atypical Renal Masses

A retrospective review of 34 patients undergoing nephrectomy for suspected renal malignancy was undertaken to evaluate the effectiveness of computed tomography (CT), ultrasound, arteriography, and cyst puncture in providing a definitive preoperative diagnosis of benign vs. malignant renal abnormality. The predictive value of a test suggesting malignancy was 88% for angiography, 86% for ultrasound, 71% for cyst puncture, and 80% for CT. The predictive value of a test suggesting no malignancy for non-CT imaging modalities was poor. The predictive value of renal CT increased to 96%, when three or more characteristics are present which suggest the lesion is not a simple, benign renal cyst. Using these criteria all malignancies were identified, and all but one benign lesion excluded. Unusual lesions that have equivocal or indeterminate diagnostic studies and only one or two noncystic CT features should undergo selective exploration rather than radical nephrectomy.

Demonstration of radiation nephritis by computed tomography

Abstract The computed tomography appearance of radiation nephritis in two cases is presented. Each patient had received radiation therapy within the previous 12 months to the para-aortic region because of metastases to lymph nodes, with the medial portion of each kidney included in the radiation port. The pattern of decreased attenuation of the medial aspect of each kidney during contrast enhancement on computed tomography should suggest radiation nephritis rather than involvement by a malignant process. Characteristic uptake on a bone scan will confirm the diagnosis.

Noninvasive diagnosis of a false left ventricular aneurysm

Abstract A case of a surgically corrected false ventricular aneurysm is presented. The roles of computerized tomography as well as other noninvasive modalities are reviewed.

Computerized tomographic evaluation of early idiopathic midline granuloma

Idiopathic midline granuloma (IMG) is a rare, slowly progressive inflammatory process producing localized destruction of the nasal mucosa, septum, paranasal sinuses, and palate, often associated with erosion through central facial tissue and bone. We review some of the salient features of IMG and present the first reported CT demonstration of this disease.

Computed tomography of the left gonadal vein.

Abstract Two patients in whom a dilated left gonadal vein was demonstrated by computed tomography and confirmed by angiography are presented. A dilated left gonadal vein may be a normal variant or it may be secondary to markedly increased renal blood flow. It may also be due to renal vein obstruction.

Case report 385

Address reprint requests to: Eric Loevinger, M.D., Medical University of South Carolina, Department of Radiology, 171 Ashley Avenue, Charleston, SC 29425, USA configuration. An irregular, well-corticated area of ossification, separate from the adjacent bone, was observed just distal to the bony process on the right side. Roentgenograms of the knees, hands, elbows and shoulders showed well developed patellae and no other skeletal abnormalities. Visual inspection of the patients hands showed normal, well-developed fingernails. Review of the patients clinical record disclosed that he had been bedridden for nearly a year with

Evaluation Of Computed Tomographic Units

This paper reports the results of the physical survey of more than twenty-five computerized tomographic scanners. Comparisons are made of noise, low contrast detectability, high contrast resolution, and radiation dose.