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Prenat Diagn. 2006 Jan;26(1):57-9.

Prenatal diagnosis of inherited epidermolysis bullosa in a patient with no family history: a case report and literature review.

Author information

1
Gynécologie-Obstétrique, Hôpital Robert Debré, AP-HP, Paris, France.

Abstract

OBJECTIVE:

The junctional form of epidermolysis bullosa (EB) is a recessively inherited mechanobullous disease in which minimal trauma results in blister formation at the dermal-epidermal junction. A rare form associated with pyloric atresia (JEB-PA) is a severe clinical subtype leading to rapid demise after birth, thus justifying prenatal diagnosis. The case characterized by abnormal ultrasound findings at 35 weeks of gestation (gastric dilatation associated with polyhydramnios) of a patient with no family history is reported.

METHOD:

Postabortion skin biopsies were analyzed by immunofluorescence that revealed marked reduction of integrin alpha6beta4 in accordance with the diagnosis of JEB-PA.

RESULTS:

Amniotic fluid contained excess total protein (4 MoM), abnormally high AFP (20.4 MoM) related to skin lesions and abnormally elevated digestive enzyme suggestive of fetal vomiting of bile. The electrophoretic pattern of cholinesterases was unusual (additional slow band). Maternal serum AFP was 3.14 MoM and free beta-hCG 13.1 MoM. Because of these concomitant findings, JEB-PA was suspected.

CONCLUSION:

The case under study was atypical because of late clinical manifestations of the disease: polyhydramnios, gastric enlargement. As maternal serum AFP at 15 weeks may be normal, it was suggested that discovery of polyhydramnios during the second or the third trimester should prompt biochemical analysis of amniotic fluid, such as AFP and GGTP assay in all cases.

PMID:
16378325
DOI:
10.1002/pd.1349
[Indexed for MEDLINE]
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