Tubulocystic Renal Cell Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A rare, cytologically high grade carcinoma that arises from the renal parenchyma. It is characterized by the presence of prominently dilated cystic spaces in a bland, fibrotic stroma. The lining cells have large irregular nuclei with prominent nucleoli and abundant eosinophilic cytoplasm. Necrosis and mitotic figures are not present. It rarely metastasizes.

**Synonyms:** - TcRCC - Tubulocystic renal cell carcinoma