Incidental detection of preclinical renal tumors with electron beam computed tomography: report of 26 consecutive operated patients

J Comput Assist Tomogr. Nov-Dec 2000;24(6):843-5. doi: 10.1097/00004728-200011000-00003.


Purpose: The purpose of this work was to describe the positive predictive value of electron beam CT (EBCT) for diagnosis of solid renal tumors.

Method: Among 11,932 consecutive patients undergoing screening EBCT, 27 cases met EBCT criteria for solid renal tumors. Twenty-six of 27 patients underwent surgery.

Results: Surgical pathology identified 25 solid renal tumors and 1 adrenal hemorrhage with thrombus. Twenty tumors were classified as T1N0M0, one was T2N0M0, and one was T3aN0M0. All tumor patients are clinically well at 1-41 months (mean 17 months) postoperatively. None of the patients had clinical signs or symptoms characteristic of renal malignancy.

Conclusion: EBCT is an effective tool for detection of solid renal tumors in a healthy outpatient population (positive predictive value 0.96). The detection rate is low [0.2% (26/11,932) at our facility] in patients undergoing EBCT for other indications. The cost-effectiveness and sensitivity of this technique for solid renal tumor detection among various populations remain to be determined.

MeSH terms

  • Adenoma, Oxyphilic / diagnostic imaging
  • Adenoma, Oxyphilic / surgery
  • Adrenal Gland Diseases / diagnostic imaging
  • Adult
  • Aged
  • Angiomyolipoma / diagnostic imaging
  • Angiomyolipoma / surgery
  • Carcinoma, Renal Cell / diagnostic imaging
  • Carcinoma, Renal Cell / surgery
  • Female
  • Follow-Up Studies
  • Hemorrhage / diagnostic imaging
  • Humans
  • Kidney Neoplasms / diagnostic imaging*
  • Kidney Neoplasms / surgery
  • Male
  • Middle Aged
  • Neoplasm Staging
  • Nephrectomy
  • Predictive Value of Tests
  • Sensitivity and Specificity
  • Thrombosis / diagnostic imaging
  • Tomography, X-Ray Computed*
  • Wilms Tumor / diagnostic imaging
  • Wilms Tumor / surgery