40% of testicular tumours are seminomatous tumours. The law mass tumou
rs (LMT) (stages IIA and IIB of the Royal Mardsen Hospital classificat
ion) are usually treated by radiotherapy and the high mass tumours (HM
T) (stages IIC, III and IV) by chemotherapy. Chemotherapy regimens are
platinum-based polychemotherapy. We report 9 cases of seminomatous te
sticular tumours (4 LMT and 5 HMT) treated by chemotherapy (BEP modifi
ed or CBDCTA-etoposide regimens), three courses, with one supplement c
ourse if necessary and surgery if residual masses are more than 3 cm l
ong. The rate of complete remission are 100% for LMT and 60% for HMT T
his could be an indication to treat in addition with orchidectomy the
LMT with chemotherapy and not with radiotherapy (standard-gold) which
is more toxic.