Discovery of a giant pulmonary hydatid cyst on thoracic deformation in a child

A 9-year-old girl without notable history who presented with a right thoracic deformity in a context of apyrexia. On admission she was hemodynamically stable, not dyspneic with no notion of hemoptysis or hydatid vomiting. The right hemithorax was bulging on inspection (A) associated with a right fluid effusion syndrome. The radiograph showed: a right pleurisy of great abundance pushing back the trachea (B).The thoracic CT scan: a giant hydatid cyst measuring 20cm x 13cm of great axis of the middle and upper lobar associated with a reactive pleurisy (C,D). The resection of the protruding dome and the extraction of the proligeral membranes were carried out (E). Blinding of the fistulas was continued by padding. After the stay in intensive care, respiratory physiotherapy was started. The postoperative course was simple, the control X-ray showed the re-expansion of the lung at the wall (F).