Organ transplantation and subsequent therapeutic agents may induce or worse
n preexisting diabetes mellitus. We report the case of a diabetic patient w
hose insulin needs disappeared after liver transplantation. Non insulin-dep
endent diabetes mellitus was diagnosed when she was 47, and was treated by
hypoglycemic drugs and then insulin. Chronic post-hepatitis C cirrhosis was
diagnosed at the age of 55 and required liver transplantation 2 years late
r. During the postoperative course, the insulin doses required to maintain
normal glucose levels progressively decreased, and insulin became completel
y unnecessary by the 29(th) postoperative day. After insulin was stopped, g
lucose levels remained within normal ranges for the 5-year-long follow-up,
despite the worsening of a preexisting diabetic nephropathy and the occurre
nce of a diabetic retinopathy. This case highlights the fa ct that liver tr
ansplantation may eliminate insulin needs in a diabetic patient but also sh
ows that degenerative complications may occur despite apparent remission of
diabetes.