Histologically, the characteristic lesion of CWP is the so-called coal macule, which consists of a focal accumulation of coal dust surrounded by a small amount of fibrous tissue.

• 在组织学上，特征性的煤尘肺损伤被称为“煤斑”，包括少量纤维组织及其包裹局灶性的煤尘沉积。