“…Mediastinal involvement, particularly bulky mediastinal involvement, has in many studies been shown to adversely influence disease free survival after radiotherapy (Nissen & Nordentoft, 1982;Liew et al, 1984;Thar et al, 1979;Leslie et al, 1985;Dorreen et al, 1984;Hoppe et al, 1982;Lee et al, 1980;Schomberg et al, 1984;Mauch et al, 1982). In most earlier studies it has, however, not been taken into account that mediastinal involvement is rare in stage I whereas it is very common in stage II.…”