[Problems of the pathogenesis and of the pathology of tuberculosis once and at present].

The paper is giving review of some important points in the development of pathology and especially of pathogenesis of tuberculosis. Highly different conceptions of the cause and the kind of tuberculosis existed in the past times up to the detection of the tubercl bacteria by Robert Koch and even later on. About 100 years ago in medical research the mean discussion of tuberculosis problem was determined by two men, Robert Koch and Rudolf Virchow. The last part of the paper deals with some aspects and actual problems of tuberculosis in the last decades.