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A cystic partially differentiated nephroblastoma producing alpha-fetoprotein
C Patriarca1, A Orazi, M Massimino
1Division of Pathology, Ospedali Galliera, Genoa, Italy.
The American Journal of Pediatric Hematology/Oncology
|November 1, 1992
Summary
This is the first reported case of cystic partially differentiated nephroblastoma producing alpha-fetoprotein (AFP). Serum AFP levels decreased post-chemotherapy and nephrectomy, despite no tumor regression.
Area of Science:
- Pediatric Oncology
- Nephropathology
Background:
- Cystic partially differentiated nephroblastoma is a rare kidney tumor in children.
- Alpha-fetoprotein (AFP) is a tumor marker typically associated with germ cell tumors.
Observation:
- A unique case of cystic partially differentiated nephroblastoma exhibiting both immunohistochemical and serological evidence of AFP production is presented.
- The tumor displayed morphological heterogeneity, necessitating a discussion on its classification and differential diagnosis from intrarenal teratoma.
Findings:
- This case represents the first documented instance of AFP production in cystic partially differentiated nephroblastoma.
- While clinical and pathological assessments showed no tumor regression, serum AFP levels significantly decreased following preoperative chemotherapy and normalized after nephrectomy.
Implications:
- AFP can serve as a marker for this rare Wilms tumor variant, aiding in diagnosis and monitoring.
- Understanding AFP's role may offer insights into the tumor's biology and response to treatment, even in non-regressing cases.