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Testicular epidermoid cysts: Sonographic features with histopathologic correlation
Author(s) -
Dogra Vikram S.,
Gottlieb Ronald H.,
Rubens Deborah J.,
Oka Mayumi,
Di Sant Agnese Anthony P.
Publication year - 2001
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/1097-0096(200103/04)29:3<192::aid-jcu1018>3.0.co;2-w
Subject(s) - medicine , echogenicity , epidermoid cyst , calcification , anatomy , pathology , radiology , ultrasonography
Testicular epidermoid cysts are rare, accounting for 1% of all testicular tumors. We present the sonographic appearances of epidermoid cysts in 3 cases, together with the histopathologic correlation. In case 1, sonography showed an intratesticular hypoechoic mass with a well‐defined echogenic rim; the mass measured 1.8 × 1.5 × 1.5 cm, and there was no evidence of calcification. In case 2, sonography showed a well‐circumscribed mass measuring 1.3 × 1.3 × 1.0 cm, with alternating hypoechoic and hyperechoic rings (onion‐ring appearance) and no calcifications. In case 3, sonography showed a 2.4‐ × 2.3‐ × 2.3‐cm, well‐circumscribed, oval mass with a heterogeneous echotexture and an outer hypoechoic halo. The mass contained plaque‐like regions of increased echogenicity, with peripheral acoustic shadowing from refraction artifact. Hypoechoic clefts were visualized posterior to the plaque‐like areas. The triad of findings—sonographic appearance of an onion ring, avascularity on Doppler sonography, and negative results of tumor marker studies—is highly suggestive of an epidermoid cyst. © 2001 John Wiley & Sons, Inc. J Clin Ultrasound 29:192–196, 2001.