Platyhelminthes are also known as flatworms because they are worms with a flat body. This is the main external morphological feature that differentiates them from nematodes (roundworms).
Even though 85 percent of kidney stones are small enough to pass during urination, fewer than 50 percent of patients chose this option. A person with a normal-size ureter can usually pass a kidney stone with a diameter less than 5 mm (about 3/16 of an inch) without significant pain or risk of kidney damage.
Drink plenty of water and other fluids. Fluid intake will make you urinate, and urination will eventually help you pass the kidney stone. Pure water is the best. Only one or two out of 10 kidney stones will require more than drinking lots of water and waiting, so make sure that if you do anything, you do this. The Institute of Medicine recommends that women drink about nine cups (2.2 liters) of fluids per day. Men should drink about 13 cups (3 liters) of fluids per day.