Charcot-Leyden crystals are associated with which condition?

Charcot-Leyden crystals are associated with which condition?

• A. Asthma
• B. Cystic fibrosis
• C. Pneumonia
• D. Pulmonary embolism

Answer: (A)

Charcot-Leyden crystals form from proteins released by activated eosinophils and crystallize in mucus during eosinophilic inflammation. This pattern is classic in asthma, where eosinophils migrate into the airways and release their granule contents, leading to sputum that can contain these crystals. Seeing them in respiratory secretions supports an eosinophilic, allergic-type process like asthma (and certain parasitic infections), rather than the other conditions listed. Pneumonia, cystic fibrosis, and pulmonary embolism involve different inflammatory pathways and do not typically feature Charcot-Leyden crystals in their secretions.

Charcot-Leyden crystals form from proteins released by activated eosinophils and crystallize in mucus during eosinophilic inflammation. This pattern is classic in asthma, where eosinophils migrate into the airways and release their granule contents, leading to sputum that can contain these crystals. Seeing them in respiratory secretions supports an eosinophilic, allergic-type process like asthma (and certain parasitic infections), rather than the other conditions listed. Pneumonia, cystic fibrosis, and pulmonary embolism involve different inflammatory pathways and do not typically feature Charcot-Leyden crystals in their secretions.