Fig. 1

Orthogonal radiographic projections of a 15-year-old cat with pulmonary capillary hemangiomatosis. a Left lateral projection showing mild cardiomegaly, the cardiac silhouette occupying almost three intercostal spaces. The caudal pulmonary vessels are ill-defined and less opaque than normally expected (arrows). A mild focal unstructured interstitial pattern (*) is seen in the ventral aspect of the caudal lung field, partly overlying the caudal vena cava (CVC). b Dorsoventral projection demonstrating mild cardiomegaly with the cardiac silhouette occupying more than 50% of the hemithorax measured at the ninth ribs. The caudal lobar pulmonary arteries are larger than the corresponding pulmonary veins measured at the ninth ribs (right: between arrows, left: between arrowheads). The left caudal lobar pulmonary artery abruptly becomes less distinct caudal to the ninth rib. Multifocal patchy areas of unstructured interstitial pattern with ill-defined borders (*) are seen in the right and left caudal lung lobes