PMC9979932_01
a) Ultrasound image of a large hematoma (asterisk) in the anterior thigh, appearing as a well circumscribed collection of mixed echogenicity. The femur (arrow) is the hyperechoic structure with posterior shadowing. b) Ultrasound image of a normal anterior thigh demonstrating normal sonographic muscle architecture with the femur (arrow) in the far field.
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The typical muscular anatomy of the thigh appeared distorted as a result (Figure 1a, online Video S1) compared to the normal contralateral thigh. (Figure 1b).
Ultrasound color Doppler image of a large hematoma (asterisk) in the anterior thigh, appearing as a well circumscribed collection of mixed echogenicity without vascularity. The femur (arrow) is the hyperechoic structure with posterior shadowing.
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On color Doppler, there was no increase in vascularity either within or surrounding the hematoma (Figure 2, online Video S2).