[Misdiagnosed peripheral pulmonary adenocarcinomas in radiographical follow-ups (author's transl)].

By means of chest radiograph-series it is pointed out that adenocarcinomas of the lung show only a slow growth in the initial stage. Therefore failures in diagnosis are not uncommon despite of well timed abnormal findings in X-ray-investigations. In the differential-diagnosis the special use of tomography plays an important part. The existence of metastases has to be supposed when the radiological presence of a solitary nodule is evident during some years, even if the primary tumour itself shows only a very slow growth.