Ultrasound Wall-Sign in Pulmonary Echinococcosis (New Application)

Original article


El Fortia M 1, El Gatit A 2, Bendaoud M 3.

1-Department of Radiology, Misurata Teaching Hospital, Misurata, Libya 2-2 Department of Surgery, Albatnan Medical Center AMC, Faculty of Medicine, Omar Al Mokhtar University, Tobrouk – Libya 3-3 Service de Radiologie, Hopital de Bologhine, Alger – Algerie

Ultraschall Med. 2006 Dec;27(6):553-7.


Purpose: We report our experience in diagnosing pulmonary cystic echinococcosis using an ultrasound sign related to the cystic wall. Materials and Methods: 40 patients with 46 cysts, suspected of pulmonary echinococcosis, based on plain chest radiographs and clinical findings, were examined by ultrasound over a 9-year period (1996 – 2004), and followed up until discharge. We applied our long experience with echinococcal cysts utilising the wall sign (WS) to diagnose pulmonary hydatid disease. All cysts were subject to surgical removal, and postoperative histopathology was the gold standard. Results: There were 34 (74 %) unilocular and 12 (26 %) multivesicular echinococcal cysts. In the univesicular cysts, the WS was found in 20 cases (66.7 %) while it was present in all multivesicular cysts (100 %). Following surgical removal, echinococcosis was confirmed by histopathology in all cases. Conclusion: We conclude that a double layered border in univesicular and double layered internal septum in multivesicular pulmonary echinococcal cysts is a reliable indicator of pulmonary echinococcosis, with a specificity of 66 % and 100 %, respectively.

Keywords: pulmonary – hydatid cyst – ultrasound – wall sign – echinococcosis

Link/DOI: http://www.thieme-connect.com/DOI/DOI?10.1055/s-2006-927232