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Related Experiment Videos

Incidentally discovered solid renal masses: what are they?

H Ozen1, A Colowick, F S Freiha

  • 1Division of Urology, Stanford Medical Center.

British Journal of Urology
|September 1, 1993
PubMed
Summary
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Many renal tumors are found incidentally during imaging for other conditions. Most incidentally discovered solid renal masses are early-stage renal carcinomas, warranting prompt evaluation.

Area of Science:

  • Urology
  • Oncology
  • Radiology

Background:

  • Renal tumors are often discovered incidentally during diagnostic imaging for various patient complaints.
  • Distinguishing benign from malignant renal masses preoperatively can be challenging.

Purpose of the Study:

  • To analyze the incidence and characteristics of incidentally discovered renal masses.
  • To determine the proportion of incidentally discovered solid renal masses that are malignant.

Main Methods:

  • Retrospective review of 99 consecutive patients undergoing surgery for presumed renal carcinoma.
  • Analysis of diagnostic imaging (CT and ultrasound) findings.
  • Pathological confirmation of tumor type and stage.

Main Results:

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  • 36% (36 of 99) of renal tumors were discovered incidentally.
  • Computed tomography (CT) and ultrasound scans led to incidental discovery in 24 patients.
  • Renal carcinoma was present in 92% of incidentally discovered solid renal masses.
  • 27 of 33 incidentally diagnosed renal carcinomas were Stage 1.

Conclusions:

  • Incidental discovery is common for renal masses.
  • Solid renal masses found incidentally are highly likely to be early-stage renal carcinoma.
  • Further investigation is recommended for incidentally discovered solid renal masses.