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[Multilocular cyst of the kidney in a child. Value of MRI?]
Z Chaoui1, N Bosson, M F Tournade
1Service de Radiologie, Hôpital d'Enfants Armand-Trousseau, Paris.
Abstract:
We report one case of multilocular cyst of the kidney in one year and three months female infant who underwent echography, computed tomography and MRI before surgery. MR image accurately reflect the morphology of the tumor: the capsule is hypointense on T1-weighted images, the septa show moderate enhancement with intravenous contrast. Varied intensities from fluid in the visualised locules presumably represent different concentration of proteins. MR imaging features are highly suggestive but non pathognomonic of the disease. Positive diagnosis always require histology.
Insights
Multilocular kidney cysts in infants can be accurately visualized using magnetic resonance (MR) imaging. While MR imaging shows characteristic features, definitive diagnosis of this kidney condition requires histological examination.
Area of Science:
- Pediatric Radiology
- Renal Pathology
- Diagnostic Imaging
Background:
- Multilocular cystic kidney disease is a rare congenital renal anomaly.
- Accurate pre-operative diagnosis is crucial for appropriate management in infants.
Purpose of the Study:
- To describe the imaging characteristics of a multilocular kidney cyst in an infant using various modalities.
- To evaluate the role of magnetic resonance (MR) imaging in diagnosing this condition.
Main Methods:
- Case report of a 15-month-old female infant with a suspected renal mass.
- Pre-operative imaging included ultrasound (echography), computed tomography (CT), and magnetic resonance (MR) imaging.
- Surgical intervention followed diagnostic imaging.
Main Results:
- MR imaging demonstrated a cystic lesion with a hypointense capsule on T1-weighted images.
- The septa within the cyst showed moderate enhancement after intravenous contrast administration.
- Varied signal intensities within the locules suggested differing protein concentrations in the cyst fluid.
Conclusions:
- MR imaging findings are highly suggestive of multilocular kidney cysts in pediatric patients.
- Despite characteristic imaging features, a definitive diagnosis necessitates histopathological confirmation.
- Multilocular kidney cysts require careful pre-operative assessment with advanced imaging techniques.