Charcot-Leyden crystals Charcot-Ley·den crystals (-līd'n)
Crystals in the shape of elongated double pyramids, formed from eosinophils, found in the sputum in bronchial asthma and in the feces in some intestinal infections.
charcot-leyden crystals (Fig. 6) are not infrequently encountered, and strongly suggest the presence of intestinal parasites.
Most characteristic is the presence of Curschmann's spirals, charcot-leyden crystals, and eosinophilic leukocytes.