What is it about?

It is shown a case of a baby girl with prenatal diagnosis of kidney cyst and presurgical diagnosis of suprarenal cyst, but the laboratory reported a much more unlikely diagnosis. We would wish to emphasise that this baby’s clinical record could have an educational purpose due to the low incidence of retroperitoneal cysts location.

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Why is it important?

Because gastric duplication represents about 8% of all the duplications of the digestive tract, being more common in females. They increasingly develop in the major curvature of the stomach without having any kind of connection between them. Gastric cysts of retroperitoneal duplication are very rare, thus there is hardly any scientific literature on the subject. Gastric duplications normally occur in the major curvature. Thanks to prenatal scans more and more are detected during the antenatal period. Here we report the case of a patient who was diagnosed with a retroperitoneal cystic tumor that the magnetic resonance (MR) showed a suprarenal cyst at three months of age, and after its removal, anatomy confirmed that it was a gastric duplication cyst. We highlight this case due to the low incidence of retroperitoneal cyst location.

Perspectives

• This report describes a rare case of gastric duplication arising as a retroperitoneal duplication cyst. • The differential diagnosis is very difficult given that it includes several rare diseases. • Imaging studies may help make prenatal or postnatal diagnosis, but their usefulness may be limited and is required a pathological study for confirmatory diagnosis.

Professor Javier Caballero-Villarraso
IMIBIC/Hospital Reina Sofia/University of Cordoba

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This page is a summary of: Retroperitoneal gastric duplication mimicking a prenatal adrenal cyst, Congenital Anomalies, October 2017, Wiley,
DOI: 10.1111/cga.12244.
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