Factors influencing the presence or absence of acute coronary artery thrombi in sudden ischaemic death.

Sudden ischaemic death results either from an episode of acute myocardial ischaemia consequent upon coronary thrombosis or from an arrhythmia arising within a scarred left ventricle. Very different proportions of these two groups have been reported in both clinical studies in resuscitated subjects with out-of-hospital ventricular fibrillation, and in necropsy series. In 168 cases of sudden death due to ischaemic heart disease coming to necropsy 73 (43.

Malignant primary pulmonary paraganglioma.

The histological, immunocytochemical, and electron microscopic findings in a case of malignant primary pulmonary paraganglioma are reported. The existence of this rare tumour is evidence for the presence of pulmonary chemoreceptors.

Morphological characteristics of clinically significant coronary artery stenosis in stable angina.

All segments of clinically significant stenosis in the coronary arteries of 54 men with stable angina were categorised according to the position of the plaques (eccentric or concentric) and the presence or absence of a pool of extracellular lipid. In the group as a whole, stenosis of greater than 50% by diameter was caused by concentric fibrous plaques in 48% of lesions, by concentric lipid plaques in 28%, by eccentric fibrous plaques in 12%, and by eccentric lipid plaques in 12%. In addition, 43 of the 54 patients had one or more stenoses with multiple channels (recanalisation).