Regarding benign scrotal tumors,
1. Alternating low and high echogenic rings are pathognomonic for epidermoid cyst
2. Leydig cell hyperplasia may be seen as multiple small areas of hyperechogenicities
3. Epididymal cystadenoma is the most common epididymal tumor
4. Epididymal cystadenomas are associated with Von-Hippel-Lindau syndrome
5. Scrotal pearls have a high association of seminomas
Answers: T, F, F, T, F
Notes: Onion peel appearance of a testicular mass is virtually diagnostic of a epidermoid cyst. Leydig cell hyperplasia may be seen as multiple small areas of hypoechogenicities. Adenomatoid tumor is the most common epididymal tumor. Scrotal pearls are fibrous pseudotumors and are not associated with increased risk of malignancy
Reference: Kim W et al. US–MR Imaging Correlation in Pathologic Conditions of the Scrotum. RadioGraphics 2007;27:1239-1253
