The investigators will describe the expression of mutation CELSR1 with codon stop and amino acids substitution mechanism in primary lymphedema, in both clinical examination and imaging exploration

According to the literature, it seems that the mutation of the CELSR1 gene is associated with primary lymphedema.

Thus, the investigators have identified families with CELSR1 mutation with codon stop or animo acid substitution mechanisms among patients followed up in vascular medicine department, at Montpellier University hospital for primary lymphedema of lower limbs.

Among the mutation carriers, the investigators have collected the clinical examinations and imaging exploration results, realized systematically during the follow up of all the patient with primary lymphedema (venous Doppler, MRI of the lymphatic system, lymphoscintigraphy of the lower limbs, abdominal ultrasound), in order to search for a morphological and functional pattern associated with the mutation.

Inclusion criteria:

• Patient followed up in vascular medicine departement at Montpellier University Hospital for primary lymphedema of lower limbs, who carries the CELSR1 mutation with codon stop or amino acids substitution mechanism.
• Relatives to the index case who carry the mutation for the segregation study.

Exclusion criteria:

• Patients who carry another mutation than CELSR1 responsible for primary lymphedema
• Syndromic form of primary lymphedema
• Patient not followed up at Montpellier University Hospital.

Patients with primary lymphedema of lower limbs, which carriewho carry d the codon stop or the amino acids substitution CELSR1 mutation, followed up at Montpellier University Hospital regardless of the age.

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