Hypertension secondary to reninoma treated with laparoscopic nephron-sparing surgery in a child.

Reninoma is an extremely rare, renin-secreting, benign kidney tumor that can cause hypertension. We present a case of hypertension secondary to reninoma treated with laparoscopic nephron-sparing surgery in a 15-year-old girl and review some relevant published literature. Laparoscopic retroperitoneal nephron-sparing surgery was performed and the tumor was removed intact. The histopathologic examination showed the characteristic of reninoma with positive CD34 staining immunohistochemically. The patient's blood pressure and level of serum potassium remained normal at 1-month follow-up examination.