[Contribution to the differential diagnosis of lung infarct, pulmonary tuberculosis and lung neoplasms]

It is reported on the rare case of a symptom-free, atypically localised haemorrhagic pulmonary infarction without provable cause in a 52-year-old male. The patient became conspicuous on account of a plum-sized focal shadow in the right lateral upper field detected during a mass examination. The state was regarded as bronchial. carcinoma. Operation and following histological investigation of the resection preparation finally resulted in the diagnosis.