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["Blueberry muffin baby"]

C Zenon1, B Bouffioux, J Louis

  • 1Service de Dermatologie, Clinique Notre-Dame, Charleroi.

Annales De Dermatologie Et De Venereologie
|September 25, 1998
PubMed
Summary
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Blueberry muffin baby syndrome, a neonatal condition with bluish skin nodules, was linked to T cell proliferation and a potential genetic anomaly on chromosome 20. The infant showed normal development with spontaneous regression of lesions.

Area of Science:

  • Neonatal Dermatology
  • Clinical Genetics
  • Immunology

Background:

  • Blueberry muffin baby is a neonatal syndrome presenting with distinctive dark-bluish skin nodules.
  • The clinical significance and prognosis of this syndrome are variable, necessitating further investigation into underlying causes.
  • Understanding the etiology is crucial for accurate diagnosis and management of affected neonates.

Observation:

  • A male infant presented with a polymalformative syndrome including macrostomy, bilateral cryptorchidism, and hexadactyly at birth.
  • The neonate exhibited approximately twenty firm, dark-bluish skin nodules distributed across the body, which regressed spontaneously within one month.
  • Pathological examination of a skin nodule revealed lymphomonocyte proliferation, with immunostaining suggesting T cell infiltration without monoclonal proliferation.

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Findings:

  • Medullary genome mapping identified a fragile site on the terminal end of chromosome 20.
  • The blueberry muffin baby syndrome was attributed to T cell proliferation, though distinguishing between extramedullary leukopoiesis and leukemia was not definitively possible.
  • Despite complete regression and absence of systemic disease, precise diagnosis and prognosis remained uncertain.

Implications:

  • The association of blueberry muffin baby syndrome with polymalformative syndrome suggests a potential novel genetic anomaly on chromosome 20.
  • Further research is warranted to elucidate the specific genetic defect and its role in neonatal skin manifestations.
  • This case highlights the importance of comprehensive genetic evaluation in neonates presenting with complex malformations and unusual skin findings.