Minute pulmonary meningothelial-like nodules: Thin-section CT appearance

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.