The only efficacious method is selective arteriography of the splenic artery. This provides excellent results immediately and in general does not cause troublesome side-effects.
Compared with splenectomy, which is the treatment chosen conventionally, not only does it spare the organ, but it also prevents the possible neoplastic propagation at the hepatic or systemic level.
In any case, even if surgical intervention is chosen, a preventive measure applied locally and generally with sodium bicarbonate turns out to be extremely efficacious in preventing a return of the neoplastic pathology.