Pre-treatment chest computed tomogram of same patient as in fig 1 showing coalescing aortopulmonary (AP) and paratracheal (PT) nodes with matting (M) and hypodense centre (hdc). Pre-treatment chest computed tomogram of same patient as in fig 1 showing coalescing aortopulmonary (AP) and paratracheal (PT) nodes with matting (M) and hypodense centre (hdc). S, sternum; T, trachea; V, vertebra. G Cherian Postgrad Med J 2004;80:262-266 Copyright © The Fellowship of Postgraduate Medicine. All rights reserved.