Benign Kidney Mixed Epithelial and Stromal Tumor

**Semantic type:** Neoplastic Process

**Definition:** A rare, benign neoplasm that most often manifests as a multiloculated cystic renal mass. It is characterized by the presence of solid and cystic components. The solid components contain a mixture of epithelial and stromal elements.

**Synonyms:** - Benign MEST - Benign Mixed Epithelial Stromal Tumor of the Kidney