Sebaceous adenoma/sebaceous epithelioma? Here's one: http://www.smartgroups.com/vault/ferrethealth/Old%20YahooGroup%20Pics/ sebaceous_adenomas.jpg with associated text: >Two benign skin tumors of sebaceous gland origin in a ferret. Remember >that 95% of all skin tumors are benign, regardless of how ugly they >look. BHW. (Images contributed by Mary Mewton). i have the impression that some of these grow rapidly Here's a wonderful write-up: http://www.afip.org/ferrets/Sebep/sebep.html [Posted in FML issue 4727]