Congenital Mesoblastic Nephroma

**Semantic type:** Neoplastic Process

**Definition:** A low grade childhood congenital malignant neoplasm arising from the kidney. It is characterized by the presence of fibroblastic cells. The majority of cases occur in the first year of life. Complete excision is usually associated with an excellent prognosis.

**Synonyms:** - CMN - CMN - Mesoblastic Nephroma - Mesoblastic nephroma - STROMAL NEPHROMA, MALIGNANT - congenital mesoblastic nephroma