Duplication 4q associated with chronic cholestatic changes in liver biopsy

We report a 15-day-old girl with partial trisomy 4q syndrome who presented with neonatal cholestasis. She had dysmorphic facial features and preaxial polysyndactyly of the right hand. The other findings were generalized hypertrichosis, pes equinovarus, oedema on feet and mild hepatomegaly. No specific reason for the cholestasis with elevated liver enzymes and direct bilirubinemia were characterized. Cytogenetic analyses revealed a karyotype 46,XX,der(13)t(4;13)(q25;p13). This is the first patient with partial trisomy 4q syndrome presented with neonatal cholestasis.