Infarct area shown as hypoechoic and avascular upper segment of R testis.
2.
A chorionic hematoma appears on ultrasound as a hypoechoic crescent adjacent to the gestational sac.
3.
On US, HCC often appears as a small hypoechoic lesion with poorly defined margins and coarse irregular internal echoes.
4.
The diagnosis can be made prenatally; routine obstetric ultrasound can identify the characteristic hypoechoic lesion inferior and medial to the globe.
5.
Cellulitis has a characteristic " cobblestoned " appearance indicative of subcutaneous edema without a defined hypoechoic, heterogeneous fluid collection that would indicate abscess.
6.
In one study, EUS revealed a diffusely swollen and hypoechoic pancreas in 8 of the 14 ( 57 % ) patients, and a solitary, focal, irregular mass was observed in 6 ( 46 % ) patients.
7.
Transvaginal ultrasonography showing a perforated copper IUD as a hyperechoic ( rendered as bright ) line at right, 3 centimeters away from the uterus at left . The IUD is surrounded by a hypoechoic ( dark ) foreign-body granuloma.
8.
In one series of 214 patients, 27.6 % had abscesses in the liver or spleen ( 95 % confidence interval, 22.0 % to 33.9 % ) . " B . pseudomallei " abscesses may have a characteristic " honeycomb " or " swiss cheese " architecture ( hypoechoic, multiseptate, multiloculate ) on CT.
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