Cystic and cavitary lung lesions constitute a spectrum of pulmonary
diseases diagnosed in both children and adults. Cysts and cavities are
commonly encountered abnormalies on chest radiography and chest
computed tomography. High-resolution computed tomography (HRCT)
of the chest frequently helps define morphologic features that may
serve as important clues regarding the nature of cystic and cavitary
lesions of the lung. Occasionally, the underlying nature of the lesions
can be readily apparent as in bullae associated with emphysema.
Cystic and cavitary lung lesions can be diagnostic challange. Although
many patients with cystic and cavitary lung lesions have a known underlying
disease, in many cases the considerable overlap in morphologic
features of these lesions tenders transthoracic needle biopsy
necessary to establish the correct diagnosis.