Resumo

HERNANDEZ CASTRILLO, Alberto; DIEGO RODRIGUEZ, Enrique de; RADO VELAZQUEZ, Miguel Ángel  e  LANZAS PRIETO, José Manuel. Spontaneous rupture of a simple renal cyst to the pyelocalyceal system: Evolution from Bosniak I to IIF. Arch. Esp. Urol. [online]. 2008, vol.61, n.3, pp.439-441. ISSN 0004-0614.

Objective: To report the spontaneous rupture of a renal cyst into the adjacent pyelocalyceal collecting system. Methods: We present the case of a 47 year old woman with a 17 centimeter simple renal cyst (Bosniak I) as well as ipsilateral nephrolithiasis. The patient had a febrile urinary tract infection with flank pain. A subsequent CT scan revealed that this cyst spontaneously ruptured into the renal pelvis. Results: Follow up evaluations showed the former cyst has decreased in size and contain thick and nodular calcifications. At present it is a Bosniak IIF cyst. Conclusion: Simple renal cysts can spontaneously rupture and drain into the adjacent renal collecting system.

Palavras-chave : Renal cyst; Spontaneous rupture; Pyelocalyceal system; Bosniak.

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