[Case reports on the problem of atypical roentgen pictures in lung tuberculosis]

With four cases the authors are demonstrating radiographic findings showing that pulmonary tuberculosis has changed its pattern in the recent period. The reasons are analyzed by reviewing literature. Also in " nontypical " roentgenograms tuberculosis must be remembered. Even in future the x-ray picture will remain an important part of finding and identifying this disease, but bacteriological examinations by smear and culture are the essential parts of diagnosis. In cases of x-ray pictures apparently noncharacteristic intensive examinations by bronchological methods or percutaneous needle biopsy may become necessary.