Selective thymic venography: new method for visualization of the thymus.

FIG. 1.-Anterior pneumomediastinography in FIG. 2.-Venography showing that shadow is FIG. 5.-Lateral view of a thymic venogram in a case of myasthenia gravis. A soft-tissue the innominate vein; the contrast medium the case of a moderate-sized tumour of left lobe shadow 5 by 2.5 cm. is shown lying behind can be seen draining into superior vena cava. of thymus. The network venous pattern of upper part of sternum. Though it is in posiSmall left lobe of thymus is shown running thymus is markedly increased, showing size of tion of innominate vein it has shape and size of from innominate vein on to anterior aspect of thymic tumour. a tumour in upper pole of thymus. T= heart border. IV= Innominate vein. T= thymus. thymus.