To Pete and Amy: Here are a couple of references that are recent and that you should check out: Lawrence HJ et al. Unilateral adrenalectomy as a treatment for adrenocortical tumors in ferrets: Five cases (1990-1992). JAVMA 203(2): pp 267-270, 15 July 1993. Rosenthal KL et al. Hyperadrenocorticism associated with adrenocortical tumor or nodular hyperplasia of the adrenal gland in ferrets: 50 cases (1987-1991). JAVMA 203(2):pp. 271-275, 15 July 1993. - Marini, RP et al. Functional islet cell tumor in six ferrets. JAVMA 202(3):430-434, 1 February 1993. These are some good references on the two most common neoplasms in the ferret. More to follow as time permits.. Bruce Williams, DVM [log in to unmask] [Posted in FML issue 0608]