[Recurrent tumor--pathologic-anatomic findings].

Based on pathological-anatomical findings, early (2 months) and late (2 years) local and distant recurrencies are presented, considering topographic aspects following surgery of primary pulmonary tumours, metastatic pathways and time intervals. Morphological criteria for differentiating two tumours from metastases, systemic recurrencies of the basic disease following early micrometastatic spread, as well as the grading of tumour regression in surgical samples following radio chemotherapy are shown.