Open Access

RESIDENT’S CORNER

Calyceal diverticulum simulating a renal tumor

Joaquin Fernandez-Alberti¹, Ramon Coronil², Alejandro Iotti³, Alejandro Nolazco¹, Marcelo Featherston¹

1 Department of Urology, Hospital Británico de Buenos Aires, Buenos Aires, Argentina
2 Department of Imaging Diagnostic, Hospital Británico de Buenos Aires, Buenos Aires, Argentina
3 Department of Anatomic Pathology, Hospital Británico de Buenos Aires, Buenos Aires, Argentina
Address correspondence to Dr. Joaquin Fernandez-Alberti, Department of Urology, Hospital Británico de Buenos Aires, Perdriel 74, CABA, 1280, Argentina

Canadian Journal of Urology 2023, 30(4), 11629-11632.

Abstract

Calyceal diverticulum (CD) is a rare anatomic anomaly with an incidence of 0.2% to 0.6% in the patients undergoing renal imaging. They are considered benign lesions and malignancy is exceedingly rare. For diagnosis it is suggested to perform a multiphasic contrast-enhanced computed tomography (CT) evidencing a diverticulum of the pelvicalyceal system with thin-walled cavities communicating with the central collecting system. However, they can be usually mistaken as kidney cancers leading to unjustified nephrectomy. Here, we present a case of a 34-year-old patient who underwent surgery in 2022 due to suspected kidney cancer and histopathological analysis surprisingly reported a CD.

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