[A neonate with the 'blueberry muffin syndrome'].

A term born girl showed livid papules and macules disseminated over her body, directly postpartum. She was examined by the pediatrician, who recognized this as the 'blueberry muffin syndrome'. Blood examination showed a modest increase of erythroblasts. Skin biopsy indicated the presence of hematologic malignancy. Bone marrow puncture revealed the diagnosis 'acute myeloid leukemia'. Other causes of the blueberry muffin syndrome are congenital infections, neuroblastoma and rhabdomyosarcoma.