Fig. 2From: Intra thoracic extra pulmonary hydatidosis: prognosis and outcomes of 8 operated patientsa CT scan established a 11 × 7 cm heterogeneous cystic lesion with unclear boundaries with the pericardium compressing the right atrium and the inferior vena cava. b MRI T2-weighted image, showing the pericardial nature of the lesion without involvement of the atrial wall; the lesion is hyper intense on T2 and hypo intense on T1-weighted imagesBack to article page