36 year old Seema Rani gives a history of corrosive poisoning 3 months back. She has been suffering from severe dysphagia since then and it is more for solids than liquids. Endoscopic evaluation revealed a complex stricture involving the mid esophagus. Endoscopist tried dilatation of the stricture and post dilatation patient was complaining of severe chest pain and swelling of the neck. Resident doctor examined her and found surgical emphysema of the neck. She was kept nil per mouth and chest X-ray was taken. What would be the expected findings in that X-ray?