Hepatic hydatid cyst Double line sign on ultrasound

Fifty four cases of hepatic hydatid cyst were examined on ultrasound during the 3 year study. On the basis of sonographic appearance and clinical symptoms, four groups of cysts were identified, uninfected, organizing, suppurative and degenerated. The study was carried out to describe some new features found in the 54 cases studied which include :1. "Double line" sign reflecting the pericyst and laminated members of the cyst; 2. Differentiating the organization hydatid cysts from cysts of other types; 3. Analysis of echogenic material between the daughter cysts previously described as matrix [cysts with abundant matrix may mimic solid lesion] and 4. some clues in differentiating suppurative hydatid cyst from an abscess