Fig. 1From: Atypical bilateral ventilation/perfusion mismatches in an asymptomatic patient suffering from metastatic thyroid cancerPreoperative perfusion (A–C), corresponding preoperative ventilation (D–F) and post-operative follow-up (G-I) perfusion SPECT images. Perfusion defects are indicated by solid (left superior lobe segments S1/2L and S3L) and dashed grey arrows (middle lobe and right inferior lobe). Left-sided pulmonary perfusion was normalised after surgery; a subsegmental probably post-surgical defect is indicated by a black arrow (left inferior lobe segment S10L)Back to article page