TFE3 and Nephroblastoma: As candidates of differential diagnoses, conventional papillary RCC, mucinous tubular spindle cell carcinoma (MTSCC), Xp11.2/TFE3 translocations-associated RCC, nephroblastoma (especially epithelial type), neuroendocrine carcinoma, and metastatic thyroid papillary carcinoma should be evaluated.