Solid Nodules and Masses The main pulmonary conditions that manifest as solid nodules and masses mimicking lung cancer are neoplastic (e. g., hamartoma, pneumocytoma [sclerosing hemangioma], inflammatory myofibroblastic tumor, and lymphoma) and nonneoplastic (e. g., intrapulmonary lymph node, tumorlet, tuberculoma, histoplasmoma, rounded atelectasis, amyloidosis, focal organizing pneumonia, and lung abscess).