“…12 Many investigative techniques have been described for the diagnosis of TDR, including plain chest X-ray, CT scan, USG, magnetic resonance imaging, upper gastrointestinal oral contrast study, diagnostic peritoneal lavage (DPL), fl uoroscopic evaluation of diaphragmatic motion, intraperitoneal injection of radioisotopes, laparoscopy, and video-assisted thoracic surgery. 6 The two techniques most commonly used are chest X-ray and CT scan.…”