formalin-fixed and contrasted specimens of the heart and lungs are especially useful in the search for occult bleeding sources , emboli in chronic recurrent pulmonary embolism , and the investigation of the vascular system in pneumoconioses , primary and secondary tumors as well as in the analysis of the pulmonary vasculature in cases of defect of the ventricular septum and cor pulmonale .
C0018787
heart
C0018818
defect