The underground environment is dark and humid, and it is easy to breed pathogenic microorganisms. A lump in the right lung of a coal mine underground transport worker was found druing occupational health examination. CT examination showed that the lump was located in the posterior segment of the upper lobe of the right lung, with point strip calcification, liquefaction necrosis, and proximal bronchial stenosis and occlusion. MRI examination FS-T(2)WI and DWI showed "target sign", annular low signal around the central high signal, and low mixed signal around the periphery, and annular high signal in the isosignal lesions on T(1)WI. Then the pulmonary aspergillus infection was confirmed by pathology.
井下环境阴暗潮湿，容易滋生致病微生物。1例煤矿井下运输工人在职业健康检查中发现右肺肿块，CT见肿块位于右肺上叶后段，伴点条形钙化及液化坏死，近端支气管狭窄、闭塞；MRI检查示FS-T(2)WI、DWI显示"靶征"，中央高信号周围呈环形低信号，外周呈条片状高低混杂信号，T(1)WI显示等信号病灶中一线状高信号的环，经过病理学确诊为肺曲霉菌感染。.
Keywords: Aspergillus; Environment; Infection; Lung; Magnetic resonance imaging; Underground coal mine.