Intratumoural interleukin-2 therapy can induce regression of non-resectable mastocytoma in dogs.

Aim: Mast cell tumours (MCT) are common skin tumours in dogs. If complete surgical removal of the tumours is not possible, then another therapy is needed. In the current study we tested the therapeutic effect of intratumoural injection of interleukin-2 (IL-2).