Which malignant scrotal pathology typically presents as bilateral, homogeneous hypoechoic tissue replacing the testicular parenchyma with increased vascularity and rare hemorrhage or necrosis?

Which malignant scrotal pathology typically presents as bilateral, homogeneous hypoechoic tissue replacing the testicular parenchyma with increased vascularity and rare hemorrhage or necrosis?

• A. Leydig Cell Tumor
• B. Choriocarcinoma
• C. Lymphoma
• D. Germ Cell Stromal Tumor

Answer: (C)

Testicular lymphoma shows a diffuse, bilateral involvement pattern. The typical ultrasound finding is bilateral, homogeneous hypoechoic replacement of the testicular parenchyma with increased vascularity on Doppler and only rare hemorrhage or necrosis. This reflects neoplastic infiltration of the testes rather than a focal mass, which is why this pattern is most characteristic. In contrast, a Leydig cell tumor usually presents as a unilateral, well-defined intratesticular mass rather than diffuse replacement. Choriocarcinoma tends to be a rapid-growing germ cell tumor that often appears as a focal vascular mass with potential hemorrhage or necrosis and is usually unilateral. Germ cell stromal tumors are also typically unilateral solid masses.

Testicular lymphoma shows a diffuse, bilateral involvement pattern. The typical ultrasound finding is bilateral, homogeneous hypoechoic replacement of the testicular parenchyma with increased vascularity on Doppler and only rare hemorrhage or necrosis. This reflects neoplastic infiltration of the testes rather than a focal mass, which is why this pattern is most characteristic.

In contrast, a Leydig cell tumor usually presents as a unilateral, well-defined intratesticular mass rather than diffuse replacement. Choriocarcinoma tends to be a rapid-growing germ cell tumor that often appears as a focal vascular mass with potential hemorrhage or necrosis and is usually unilateral. Germ cell stromal tumors are also typically unilateral solid masses.