🐶 Boomer’s 📖 started with his Bladder Stones discovered @bocamidtownevet on a routine 🐾 🩺 #vetcheck . Unlike most bladder stones, Boomer’s stones were rare & unusual ! Did you know that only about 5% of all bladder stones are urate stones? Boomer’s urate stones led us to check him for impaired liver function, as these stones can form as a result of an abnormal liver shunt #portosystemicshunt . A liver shunt is an abnormal connection between veins which bypass the #liver Boomer came to us today after his onsite #ctscan (thanks to @mobilepetimaging) enabled us to confirm that Boomer had a single congenital extrahepatic liver shunt which required medications #vetmedicine & diet change as well as surgical repair of his liver shunt. The surgical correction of Boomer’s liver shunt required an ameroid constrictor, containing an inner ring of casein that is surrounded by a stainless steel sheath. #casein is a hygroscopic substance that swells as it slowly absorbs body fluid. The stainless steel sheath forces the casein to swell inwardly, eventually closing the ring & obliterating the shunt. Ameroid constrictors gradually close over 4-5 weeks !