Occasionally in the sputum there might be curschmann spirals, which are spiral shaped mucus plugs or basically elongated mucous casts from small bronchi of people with bronchial asthma.

偶尔在痰中可能会有库什曼螺旋晶体，也就是螺旋形的粘液栓，或是本质上是支气管哮喘患者的小支气管塑成的细长粘液。