[Neonatal cutaneous hematopoiesis disclosing congenital rubella].
BACKGROUND
Congenital rubella, which should disappear with widespread vaccination and mandatory obstetrical care, can occur as a purpuric eruption in the newborn. We report a case of blueberry muffin baby.


METHODS
An infant delivered after an "uneventful" pregnancy presented a generalized "purpuric" eruption and had axial hypotonia. Histology of a biopsy showed evidence of cutaneous erythropoiesis. The complete workup led to the diagnosis of congenital rubella.


CONCLUSIONS
Cutaneous erythropoiesis is a well defined clinical and histological entity. There are several causes including infection and hematology disorders. Metastasis of a neuroblastoma, which must be eliminated by early biopsy, is the main differential diagnosis.


CONCLUSIONS
Blueberry muffin rash is never idiopathic. The prognosis depends on the cause. Physicians should remember that congenital rubella has not yet been completely eradicated in France.
Penouil
M H
MH
Service de Dermatologie, Centre Hospitalier de Troyes.
Bressieux
J M
JM
Mehaut
S
S
Hopfner
C
C
D003937:Diagnosis, Differential; D006410:Hematopoiesis; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D012410:Rubella Syndrome, Congenital / Q000150:complications*; D017193:Skin Diseases, Viral / Q000209:etiology* / Q000473:pathology
Hématopoïèse cutanée néonatale révélant une rubéole congénitale.