Crystals in feces

A variety of crystals can be seen in normal feces, such as calcium phosphate, calcium oxalate, cholesterol, calcium carbonate and other crystals, which have little clinical significance. See Charcot-Lyden crystals, which are often related to intestinal parasitic infections such as amebic dysentery and hookworm disease, and allergic enteritis; if brown crystals are seen, it suggests bleeding in the digestive tract.