Juxtaglomerular Cell Tumor

**Semantic type:** Neoplastic Process

**Definition:** A benign, well circumscribed neoplasm arising from the cortex of the kidney. It secrets renin and the patients usually present with severe hypertension and marked hypokalemia. Morphologically, it is characterized by the presence of sheets of polygonal or spindle-shaped neoplastic cells forming a hemangiopericytic pattern.

**Synonyms:** - Juxtaglomerular Neoplasm - Juxtaglomerular Tumor - Juxtaglomerular tumor - Reninoma - Reninoma