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Updated: Aug 5, 2026

In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
Published on: March 30, 2015
Multilocular renal cyst: a diagnostic pitfall on fine-needle aspiration cytology: case report
1Department of Cytology, Westmead Hospital, NSW, Australia.
Abstract:
Benign renal lesions, apart from simple cysts, are rarely sampled by fine-needle aspiration biopsy (FNAB) and are potential diagnostic pitfalls. A complex renal mass in a 33-yr-old pregnant woman, presenting in the second trimester with haematuria, was aspirated twice, a week apart, under ultrasound guidance. The second FNAB yielded predominantly mesenchymal elements thought to represent an angiomyolipoma, but the mass was identified as a multilocular renal cyst (MLRC) on the nephrectomy specimen. Differential diagnoses of angiomyolipoma, MLRC, and renal cell carcinoma (RCC) are compared and discussed in relation to patient management.
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