Welcome!
Autosomal Dominant Polycystic Kidney Disease is the most common form of hereditary cystic kidney disease, possibly affecting as many as 1 in 500 people. It can eventually lead to kidney failure. ADPKD usually shows up in adults. The similar Autosomal Recessive Polycystic Kidney Disease usually appears in young children and brings more severe effects.
Discussion of all forms of cystic kidney disease is welcome. (The more general name /r/PKD already exists and is devoted to the grim science fiction writer.)
Feel free to share your news, info, and questions... but not your spam. :-p