Mainly incited by the bushfirelike spread of endoscopic operative tech
niques in general surgery, thoracoscopy has become the object of new i
nterest in the field of thoracic surgery. Location and resection of lu
ng tumors are problematic for several reasons and so far not standardi
zed. The main problems are pointed out. A new technique together with
the instruments and their advantages is demonstrated. Future aspects a
re discussed.