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Papillary renal cell carcinoma: CT and sonographic evaluation
AJR. American Journal of Roentgenology
|November 1, 1984
Summary
Computed tomography (CT) and ultrasound imaging can help diagnose papillary renal cell carcinoma, a common kidney cancer. This cancer often presents at an early stage and shows specific features on CT scans, aiding surgical decisions.
Area of Science:
- Radiology
- Urologic Oncology
- Pathology
Background:
- Papillary renal cell carcinoma (PRCC) is a distinct subtype of kidney cancer.
- Accurate preoperative diagnosis is crucial for appropriate management, especially for renal-sparing surgery.
Purpose of the Study:
- To review and correlate the computed tomography (CT), sonographic, and pathologic findings in surgically confirmed cases of PRCC.
- To evaluate the diagnostic utility of imaging modalities for PRCC.
Main Methods:
- Retrospective review of 13 surgically confirmed PRCC cases.
- Analysis of CT and sonographic imaging features.
- Correlation of imaging findings with pathologic results.
Main Results:
- CT findings correlated well with clinicopathologic and angiographic features.
- PRCC frequently presented at low stage (I or II), showed calcifications, and had less enhancement (diminished vascularity) on CT compared to typical hypernephroma.
- Sonography demonstrated no consistent pattern; masses were hyperechoic, hypoechoic, or isoechoic relative to normal renal cortex.
Conclusions:
- CT imaging allows for confident prospective diagnosis of PRCC in many cases.
- Characteristic CT features, including low stage, calcification, and reduced enhancement, are key diagnostic indicators.
- Accurate CT diagnosis is vital for considering renal-sparing surgical options.