Kidney Mixed Epithelial and Stromal Tumor Family

**Semantic type:** Neoplastic Process

**Definition:** A family of tumors ranging from predominantly cystic tumors (adult cystic nephromas) to tumors that are variably solid (mixed epithelial and stromal tumors) and contain biphasic epithelial and stromal components with spindle stroma, glands, and cysts. Most of these tumors are benign. (WHO 2016).

**Synonyms:** - MEST Family