[Topographic study of parasternal lymph nodes. Finding a window for radiotherapy]

A series of arteriographies of the internal thoracic arteries was performed by the authors. By superimposing the tracing of 55 thoracic walls thus obtained, the authors were able to observe a preferential pathway. This pathway is located at a rather precise distance of the manubrio-corporeal angle and of the median axis. 22 parasternal chains were dissected. The lymphatic chains appeared closely linked with the arteries. An irradiation field covering all the parasternal nodes was thus precisely defined.