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Echo-free and relatively echo-free "renal sinus lipomatosis"
Rofo : Fortschritte Auf Dem Gebiete Der Rontgenstrahlen Und Der Nuklearmedizin
|May 1, 1983
Summary
Sonography can misinterpret peripelvic lesions. Computed tomography (CT) revealed that many echo-free lesions diagnosed as sinus lipomatosis were actually cysts, improving diagnostic accuracy.
Area of Science:
- Medical Imaging
- Radiology
- Urology
Background:
- Peripelvic lesions are often detected during abdominal imaging.
- Sinus lipomatosis is a common interpretation for echo-free peripelvic lesions on ultrasound (sonography).
- Accurate differentiation of these lesions is crucial for appropriate patient management.
Purpose of the Study:
- To evaluate the diagnostic accuracy of sonography in characterizing peripelvic lesions.
- To compare sonographic findings with computed tomography (CT) for peripelvic lesions.
- To determine the true nature of lesions initially interpreted as sinus lipomatosis.
Main Methods:
- Retrospective review of 48 peripelvic lesions initially interpreted by sonologists.
- Correlation of sonographic findings with subsequent CT scans.
- Analysis of lesion characteristics, including echogenicity and CT density.
Main Results:
- Of 11 initially echo-free lesions, 8 were confirmed as cysts by CT, and 3 were identified as fibrous fat.
- 37 relatively echo-free lesions, interpreted as sinus lipomatosis, showed weak echoes on CT.
- Hypodense peripelvic fat accumulations (sinus lipomatosis) were not completely echo-free on sonography.
Conclusions:
- Sonography may overestimate the prevalence of sinus lipomatosis.
- Cysts are a significant component of echo-free peripelvic lesions.
- CT provides more definitive characterization of peripelvic lesions compared to sonography.