Cellular Congenital Mesoblastic Nephroma

**Semantic type:** Neoplastic Process

**Definition:** A congenital mesoblastic nephroma characterized by increased cellularity, sheet-like proliferation of fibroblastic cells, and increased mitotic activity. Necrotic changes are commonly present.

**Synonyms:** - Cellular Mesoblastic Nephroma - Infantile Renal Fibrosarcoma