• Tuberculosis and Respiratory Diseases
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• v.39 no.3
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• pp.278-281
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• 1992

Air fluid level in a large ring shadow poses a diagnostic problem. But a new development of fluid level in preexisting bullous lesion is another problem. A 60 year old man with chronic obstructive lung disease was noticed to have multiple bullae. A few years later fluid level was newly developed in some of the bullae. Fluid level persisted for several months and later completely filled the space. Surgical exploration revealed pus collection in the bullae and epidermoid carcinoma in the nearby bronchi.