CT appearance of solitary and multiple cystic and cavitary lung lesions

Cystic and cavitary lung lesions constitute a spectrum of pulmonary disease s diagnosed in both children and adults. We reviewed the CT findings of the most common cystic and cavitary lung lesions and we defined useful morphol ogical criteria that will help radiologists to distinguish benign from mali gnant cavitary lesions. However, in many cases the considerable overlap in morphological features of benign and malignant cavities renders transthorac ic needle biopsy necessary to establish the correct diagnosis.