Fig. 1From: Unusual intramuscular locations as a first presentation of hydatid cyst disease in children: a report of two casesUltrasound exam of the right Paraspinal region. a: A well-defined thick encapsulated cystic lesion is seen in the right paraspinal muscle measuring about 2.4 × 1.7 cm with water Lilly sign (arrow) consistent with hydatid cyst, b Doppler ultrasound of the same lesion showing hyperemia of the capsule and the daughter cysts (arrow)Back to article page