tumor below the scalene muscle

The MRI's I have taken show a tumor about 2 cm long growing from the scalene muscle and resting on the nerves that control my left arm.  It APPEARS benign from the films, but it cannot be biopsied due to its location.  It has  been suggested that I follow a 12 week program of ESSIAC to help reduce the size,  Does anyone have any experience with this herb or can suggest any other homeopathic remedy to shrink the size.  Thanks  Bev