Wolcott-Rallison syndrome is a rare autosomal recessive condition char
acterized by diabetes mellitus arising in early infancy and multiple e
piphyseal dysplasia. To date, nine cases have been described in the wo
rld literature. We report an affected girl who died at the age of 4 ye
ars and on whom a full autopsy was performed. In addition to neonatal
diabetes mellitus and epiphyseal dysplasia, this child had mental reta
rdation and recurrent episodes of self-limiting hepatic failure. Autop
sy revealed severe pancreatic hypoplasia and markedly abnormal pancrea
tic histology, while histology of the bone was consistent with epiphys
eal dysplasia. There was laryngeal stenosis and pulmonary hypoplasia.
The heart was enlarged with mitral valve dysplasia and stenosis, left
atrial dilatation, left ventricular hypertrophy, and endocardial fibro
elastosis. Examination of the central nervous system showed arrhinence
phaly and cerebellar cortical dysplasia. The liver showed minor histol
ogical abnormalities but no features were present to account for the r
ecurrent hepatic failure. In addition to Wolcott-Rallison syndrome thi
s child had a deletion at 15q11-12 in 65% of her cells.