Chest Imaging

Cavitary nodule

Cavitation implies necrosis with expulsion of the necrotic material via an airway. A nodule containing an air-filled necrotic region is termed cavitary. Common causes include primary or metastatic malignant neoplasm, lung abscess or septic emboli, tuberculosis, fungal infections, rheumatoid lung disease, Wegeners granulomatosis chest and Langerhans cell histiocytosis. Cavitary nodules have thicker and more irregular walls than lung cysts or bullae.