To any DVM. I have a 3.5 yo marshall farms male ferret. About 3 months ago I thought I found a mast cell tumor behind his left front limb. I had the vet check it and, because it had a hair growing in the middle of it and the fact that it seemed to be regressing, we watched it disappear over a course of several days without treatment other than keeping it clean. Tonight I found the exact same thing, same location, same appearance except for the hair. Typical mast cell lesion this time--scab, circular, very slightly raised and thickened. here's my question. If we remove it, I know the incidence of recurrence is high. If we don't, what are the possible consequences? I have come to understand that these tumors are invariably benign. However, if they aren't and can/may metastasize, then removal should be immediate, of course. I guess I would like to know, do you recommend, in all circumstances other than poor health, etc, that surgical removal is the only course of action, and the best? Thanks. Amy Cada [Posted in FML issue 1146]