How does prostate cancer typically appear on ultrasound?

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How does prostate cancer typically appear on ultrasound?

Prostate cancer typically appears hypoechoic on ultrasound. On transrectal ultrasound, the normal peripheral zone is relatively brighter, so a malignant area stands out as a darker, hypoechoic region where the cancer disrupts the usual tissue architecture. This darker patch reflects the denser cellular makeup of malignant tissue and its altered acoustic properties, making hypoechoic foci the classic sign of cancer. Of course, not all cancers are clearly hypoechoic—some may be isoechoic or only subtly darker—and very cystic or necrotic components would look anechoic, but the most characteristic ultrasound appearance is a hypoechoic lesion within the prostate.

Prostate cancer typically appears hypoechoic on ultrasound. On transrectal ultrasound, the normal peripheral zone is relatively brighter, so a malignant area stands out as a darker, hypoechoic region where the cancer disrupts the usual tissue architecture. This darker patch reflects the denser cellular makeup of malignant tissue and its altered acoustic properties, making hypoechoic foci the classic sign of cancer. Of course, not all cancers are clearly hypoechoic—some may be isoechoic or only subtly darker—and very cystic or necrotic components would look anechoic, but the most characteristic ultrasound appearance is a hypoechoic lesion within the prostate.

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