Fig. 1
From: A young woman from an Echinococcus-endemic area with progressive abdominal distension: a case report
a Abdominal ultrasound (panorama mode in sagittal plane) revealing the large cystic mass filling nearly the whole abdomen with a cranio-caudal diameter of approximately 27 cm. The main cystic tumor consists of many smaller cyst-in-cyst structures. b Ultrasound image with the typical cyst-in-cyst sign suspicious for diagnosis of hydatid disease in stage CE2. c, d Magnetic resonance imaging scan of the abdomen (b, T1 sequence axial; c, T2 sequence coronal) showing the marked-off large cystic mass filling nearly the whole abdomen and displacing parenchymal organs and intestinal structures