[Complex renal cyst. Laparoscopic treatment]

Area of Science:

• Urology
• Surgical Oncology
• Renal Pathology

Background:

• Distinguishing between simple and complex renal cysts requiring intervention can be diagnostically challenging.
• Laparoscopic surgical techniques, including cyst decortication and nephrectomy, are increasingly the standard of care for managing renal cysts.
• Current guidelines recommend laparoscopic procedures for Bosniak cyst types III and IV, symptomatic type I/II, and all type II Bosniak cysts.

Observation:

• A case report details a patient initially undergoing laparoscopic cyst decortication for a Bosniak cyst type II.
• During the procedure, a renal cell carcinoma was unexpectedly identified.
• The patient subsequently underwent a laparoscopic radical nephrectomy.

Findings:

• Laparoscopic cyst decortication for Bosniak type II cysts can lead to the incidental discovery of renal cell carcinoma.
• This finding highlights the importance of vigilance even in cases of seemingly less complex cystic lesions.
• The case demonstrates the potential need for more extensive surgical intervention than initially planned.

Implications:

• The findings underscore the critical role of accurate pre-operative diagnosis and the potential for intraoperative surprises in renal cyst management.
• This case may inform surgical decision-making and diagnostic protocols for Bosniak type II renal cysts.
• It emphasizes the need for thorough pathological examination of all resected renal cyst specimens.