Leeds Fetal Medicine Unit Website

Mesenteric cyst

Definition	Cystic structure arising from the lymphatic sytem. Usually found in the small bowel mesentery, but may also occur in solid organs
Incidence	Rare
Diagnosis	Ultrasound, often multilocular cysts with thin walls not involving the urinary tract
Gestation at diagnosis	18 weeks onwards
Known chromosomal or genetic association	No, unknown cause
Further investigations	Consider MRI if very large or involving organs
Differential Diaganosis	Enteric Duplication cyst Ovarian Cyst Meconium Pseudocyst
Prognosis	Excellent, usally require neonatal resection
Recurrance risk	Low
Research Studies	None

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