A pulmonary mass is any area of pulmonary opacification that measures more than 30 mm, an arbitrary but useful measurement. The commonest cause of a pulmonary mass is primary lung cancer 1-3:
- bronchogenic carcinoma
- granuloma: most common non-malignant cause
- non-granulomatous infection
- pulmonary hamartoma
- pulmonary infarction
- organizing pneumonia
- pulmonary sequestration
- pulmonary amyloidosis
- other malignancy
- pulmonary lymphoma: primary or secondary
- inflammatory myofibroblastic tumor of lung 2
- carcinoid tumors
-
pulmonary metastases
- mucoid calcification of mucinous adenocarcinoma
- breast carcinoma
- gastrointestinal tract adenocarcinoma
- dystrophic calcification
- papillary thyroid carcinoma
- giant cell tumor of bone
- synovial sarcoma
- treated pulmonary metastases
- bone forming / cartilage mineralization
- mucoid calcification of mucinous adenocarcinoma
- schwannoma: rarely endobronchial 2
- solitary fibrous tumor of the lung 2
- perivascular epithelioid cell tumor (PEComa) 2
- primary pulmonary pleomorphic adenoma 2
- pneumocytoma 3
- lung mass mimics
- Castleman disease: hilar mass may mimic lung lesion
- rounded atelectasis