[The indications for the curative radiotherapy of non-small-cell bronchial carcinoma. Reflections from a clinical viewpoint].

Purpose: To find out the indications for treatment and selection criteria of patients who will profit from curative radiotherapy.
Patients and Methods: A literature review and own data concerning the lymphogenous metastatic pathways and incidence of involvement of loco-regional lymph nodes are used to define the biological treatment volume of a curative irradiation. A retrospective analysis of 266 patients with non-small-cell lung cancer (NSCLC) was performed. The metastatic pathway of the lymphogenous spread was analysed based on pretherapy CT scan as well as clinical examination.
Results: Only carefully selected patients under similar selection criteria as for curative surgery are suitable to undergo a curative radiotherapy. The biological treatment volume for curative irradiation has to include the primary with a margin, the ipsilateral hilar nodes as well as the whole mediastinum including the subcarinal lymph nodes, but not the contralateral hilar and supraclavicular lymph nodes. The survival rate of patients with N3 nodal stage are 0%. A 3-step concept for curative radiotherapy until 70 Gy is proposed.
Conclusions: A limited number of patients with NSCLC, carefully selected as for surgery, are suitable to undergo a curative radiotherapy with 70 Gy. This will enable to demonstrate a curative value of radiotherapy.