Case 5
Basic clinical and pathological data 64-year-old female Tumor of the kidney in the vicinity of renal hilus 4 x 3 x 3 cm Whitish, well circumscribed
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Spider- harvestman
Immunohistochemistry Negative reactions: EMA, WT1 Positive reactions: AE1-AE3, weakly CAM 5.2, MIB 1 (Ki 67): 2-10 cells/hpf
Metanephric adenoma
Arroyo 1999: Metanephric tumors group Metanephric adenoma Metanephric adenofibroma Metanephric stromal tumor
Metanephric adenoma Close relationship to Wilms tumor Close relationship to papillary RCC Combinations were rarely described