My sis has high level of prolactin controlled by dostinex, (cabergoline)dose that mean she has pituitary gland tumor? is that related to her peutz-jeghers syndrome?

Carney complex: Peutz-Jaeghers (P-J) syndrome is not classically associated with pituitary tumors; there is a syndrome called Carney complex that shares features / is similar to P-J syndrome and without genetic testing, they could be confused. Carney complex is associated with pituitary tumors. 80-95% of patients with P-J syndrome have mutation in STK11 (LKB1) .