http://www.smartgroups.com/message/readmessage.cfm?gid=1423922&messageid=1842
 
Mast cell tumors are not malignant in ferrets.  I would strongly suggest
a fourth option - nothing at all.  Ferret owners are very familiar with
mast cell tumors - they are the second most common skin tumors in
ferrets, and pose no long-term threat.
 
With kindest regards,
Bruce Williams, DVM
[Posted in FML issue 3944]