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		| THORACIC SURGERY Case #1 - A man, aged 70, with a long history of esophageal dysmotility.
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		| DISCUSSION QUESTIONS:
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			| 4.) If you see a cavity and air fluid level on chest X-ray, what is your differential diagnosis? |  
			| Differential diagnosis of cavity with air-fluid level: cavitating lung carcinoma, loculated empyema, infected cyst or bulla, tuberculosis, bronchiectasis, fungal infection
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