What is the common sonographic appearance of a seminoma?

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What is the common sonographic appearance of a seminoma?

On gray-scale ultrasound, seminomas are most often seen as solid, homogeneous intratesticular masses that are darker than the surrounding normal testicular tissue. This hypoechogenic appearance comes from the tumor replacing normal seminiferous tissue with densely packed tumor cells and fibrous stroma, which reflects fewer ultrasound waves and thus appears darker. While some seminomas can be isoechoic to the surrounding parenchyma, the classic, most characteristic finding described in exams is hypoechoic. An anechoic presentation would suggest a cystic lesion, and a hyperechoic appearance is less typical for seminomas. Doppler can show increased vascularity within the lesion, but gray-scale hypoechogenicity is the key point.

On gray-scale ultrasound, seminomas are most often seen as solid, homogeneous intratesticular masses that are darker than the surrounding normal testicular tissue. This hypoechogenic appearance comes from the tumor replacing normal seminiferous tissue with densely packed tumor cells and fibrous stroma, which reflects fewer ultrasound waves and thus appears darker. While some seminomas can be isoechoic to the surrounding parenchyma, the classic, most characteristic finding described in exams is hypoechoic. An anechoic presentation would suggest a cystic lesion, and a hyperechoic appearance is less typical for seminomas. Doppler can show increased vascularity within the lesion, but gray-scale hypoechogenicity is the key point.

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