[Typical renal metanephric adenoma. Conservative surgery]

Area of Science:

• Nephrology
• Pediatric Oncology
• Uropathology

Background:

• Metanephric adenoma is an uncommon renal tumor belonging to the group of embryologic or nephroblastic tumors.
• It predominantly affects young females and generally presents with an excellent prognosis.

Observation:

• Accurate differentiation from malignant variants, such as renal cell papillary carcinoma, metanephric adenosarcoma, and adult Wilms tumor, is critical.
• Suspicion and intraoperative analysis aid in selecting conservative renal surgery, potentially avoiding radical procedures.

Findings:

• While generally benign, there are documented cases of metastatic metanephric adenoma.
• The completely benign nature and malignant potential of metanephric adenoma require further clarification.

Implications:

• Early and accurate diagnosis of metanephric adenoma can guide surgical management towards less invasive approaches.
• Further research is needed to fully elucidate the malignant potential and metastatic capabilities of metanephric adenoma.