Minute pulmonary meningothelial-like nodules are often incidentally discove
red during pathologic evaluation of pulmonary parenchymal specimens. These
lesions were once thought to represent pulmonary chemodectomas, but patholo
gical studies have shown that they are not of neuroendocrine origin. Minute
pulmonary meningothelial-like nodules are benign, perhaps reactive in natu
re, but are occasionally found in association with lung carcinoma. They may
appear as randomly distributed well-defined micronodules on thin-section c
hest CT, and thus may simulate metastatic disease when associated with lung
carcinoma.