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Meacham syndrome

Synonym(s) Meacham-Winn-Culler syndrome
Rhabdomyomatous dysplasia-cardiopathy-genital anomalies syndrome
Prevalence <1 / 1 000 000
Inheritance -
Age of onset Infancy
  • Q87.8
MeSH -
MedDRA -


Disease definition

Meacham syndrome is a multiple malformation syndrome characterized by congenital diaphragmatic abnormalities, genital defects and cardiac malformations.


Less than 15 patients have been reported worldwide.

Clinical description

Ambiguous or female external genitalia are present in individuals with 46,XY karyotype. The genital abnormalities are variable and may include a true double vagina or septate vagina, absent uterus, abnormal male gonads in the presence of normal external female genitalia or male pseudohermaphroditism with abnormal internal female genitalia. Complex cyanotic congenital heart defects, (hypoplastic right lungs, anomalous pulmonary venous return and abnormalities of the diaphragm) are frequent. One patient with rhabdomyomatous dysplasia of the lungs has been reported.


Mutations in the WT1 gene have been identified in some patients with Meacham syndrome. Mutations in the same gene have previously been detected in patients with Denys-Drash syndrome (see this term).

Diagnostic methods

Diagnosis is based on the clinical findings. The occurrence of a true double vagina should lead the clinician to careful pulmonary and cardiac evaluation.

Differential diagnosis

The main differential diagnosis comprises Denys-Drash syndrome, an allelic disorder with overlapping clinical features. Beckwith-Wiedemann, Simpson-Golabi-Behmel and Perlman syndromes should also be considered (see these terms).

Management and treatment

Management is supportive.


All patients reported to date died in early childhood.

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