Juxtaglomerular cell tumor

Juxtaglomerular cell tumor (JCT, JGCT, also reninoma) is an extremely rare kidney tumour of the juxtaglomerular cells, with fewer than 100 cases reported in literature. This tumor typically secretes renin, hence the former name of reninoma.

Source: Wikipedia — Juxtaglomerular cell tumor (CC BY-SA 4.0)