Myocardial tuberculosis.

Case 1-A Pakistani youth, aged 21, with no significant previous medical history, suddenly complained of feeling dizzy and collapsed unconscious. An ambulance was called but when it arrived the patient was dead. The postmortem examination showed the body of a well-built, healthy, young man. Several enlarged mediastinal glands were found. The heart was normal in size, and the pericardium, valves, and cavities were normal. The cut surface of the myocardium showed a yellowish infiltrate throughout, especially in the septum, which was thickened. All other organs, including both lungs, were normal. Histology of both the mediastinal glands and the myocardium showed typical caseating granulomata, although tubercle bacilli could not be demonstrated.