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Case 51

Adenomatoid Tumour of Epididymis

Findings

A small solid lesion measuring 10 x 16 x 17 mm is located in the tail of the right epididymis. The right testicle is otherwise normal.

Diagnosis

Adenomatoid Tumour of Epididymis

Discussion

Extratesticular neoplasms are unusual and usually involve the epididymis. The most common neoplasm is the adenomatoid tumour representing 32% of tumours arising in paratesticular tissues. It is commonly found in patients aged 20-50, is generally unilateral, solitary, well-defined, oval in shape, and rarely measures > 5 cm in diameter. Other extratesticular tumours are rare and include cystadenomas, fibromas, haemangiomas, lipomas, leiomyomas, neurofibromas, cholesterol granulomas, and adrenal rests.

See also Case 52, a related case.

References

Rumak CM, Wilson SR, Charboneau JW (Eds). Diagnostic Ultrasound. Mosby Year Book, Inc (1991) p581

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