[Cystic nephroma : a rare kidney neoplasm]

Area of Science:

• Nephrology
• Oncology
• Surgical Pathology

Background:

• Cystic nephroma is a rare kidney neoplasm.
• It is a slow-growing tumor that develops insidiously.
• Diagnosis is often incidental, except in cases of mass syndrome in children.

Observation:

• Medical imaging shows tumor enhancement after contrast injection, raising diagnostic uncertainty.
• Percutaneous biopsy is not contributory to confirming the diagnosis.
• Malignant transformation is rare but cannot be entirely ruled out preoperatively.

Findings:

• Cystic nephroma is a benign tumor.
• Partial nephrectomy is the preferred treatment.
• Preoperative diagnosis remains difficult, complicating conservative surgical approaches.

Implications:

• Accurate preoperative diagnosis of cystic nephroma is challenging.
• Conservative surgical treatment, while ideal, is difficult to propose confidently.
• Further research into diagnostic modalities may improve preoperative certainty and surgical planning.