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Testicular epidermoid cysts: sonographic features with histopathologic correlation.
V S Dogra1, R H Gottlieb, D J Rubens
1Department of Radiology, Mercy Medical Center, North Eastern Ohio Universities College of Medicine, 1320 Mercy Drive NW, Canton, Ohio 44708, USA.
Journal of Clinical Ultrasound : JCU
|May 1, 2001
Summary
Testicular epidermoid cysts are rare tumors. Sonography reveals characteristic appearances, including onion-ring patterns, aiding diagnosis when combined with Doppler and tumor markers.
Area of Science:
- Radiology
- Oncology
- Pathology
Background:
- Testicular epidermoid cysts are uncommon, representing approximately 1% of all testicular neoplasms.
- Accurate diagnosis is crucial for appropriate patient management and to differentiate from malignant testicular tumors.
Observation:
- Three cases of testicular epidermoid cysts are presented with detailed sonographic findings.
- Sonographic features included intratesticular hypoechoic masses with well-defined echogenic rims, onion-ring appearance, heterogeneous echotexture, and peripheral acoustic shadowing.
Findings:
- Sonography demonstrated varied appearances, from simple hypoechoic masses to complex patterns with alternating echogenic and hypoechoic rings.
- The triad of onion-ring sonographic pattern, avascularity on Doppler, and negative tumor markers strongly suggests an epidermoid cyst diagnosis.
- Histopathologic correlation confirmed the sonographic diagnoses in all three cases.
Implications:
- Recognizing these specific sonographic features can improve the diagnostic accuracy of testicular epidermoid cysts.
- This imaging-based diagnostic approach may reduce the need for invasive procedures in select cases.
- Enhanced understanding of sonographic appearances aids in differentiating benign epidermoid cysts from other testicular pathologies.