Fig. 12.

a, b Axial T2 fat-saturated and T1 fast spin echo MRI series in a 15-year-old female dancer without a definitely identifiable acetabular labral tear but only a well-demarcated posterior paralabral cyst presumably a ganglion cyst (arrow in a and b) compressing sciatic nerve (arrowhead in a and b). c, d Longitudinal hip sonogram in a 15-year-old female dancer with painful left posterior ganglion cyst in close proximity to the sciatic nerve (arrowhead in a and b). Pre (arrow in c) and post (arrow in d) ultrasound-guided paralabral ganglion cyst aspiration.