Background: Pneumothorax is a medical emergency which defined as an abnormal condition where there air in the pleural cavity physiologically contains only small amount of fluid. can arise spontaneously or result trauma. Method: The method used this study literature review. conducted by author searching various written sources, whether form books, archives, magazines, articles and journals, docu...

We report two cases of paratracheal air cyst discovered incidentally at neck ultrasonography and confirmed at CT. The cysts were located at the inferoposterior aspect of the right lobe of the thyroid. Ultrasonography revealed an ill-defined hypoechoic mass containing hyperechoic foci which mimicked calcifications. Neck CT confirmed the presence of an ill-defined air pocket which communicated wi...

Future exploration of Saturn's moon Titan can be carried out by airships, which have the capability to study the atmosphere as well as the capability to land and study the surface at multiple locations. Several lighter-than-air gas airships and passive drifting heated-air balloon designs have been studied, but a heated-air airship could combine the best of both. A design tool was created to ena...

background and aim: probing is the only reliable method for diagnosing periodontal diseases; however, it is a painful examination. the purpose of this study was evaluation of the effect of emla anesthetic gel on the level of pain upon probing in patients with chronic periodontitis referring to the periodontology department of the dental branch of islamic azad university of tehran during 2013-20...

tocele in the left upper lobe. A linear air pocket in the soft tissue of the left upper hemithorax was also noted ( fig. 1 c). CT revealed a 15 ! 6 cm cavitary lesion in the left upper lobe extending and communicating with the chest wall through a fistulous tract without pneumothorax or mediastinal emphysema ( fig. 2 ). The subcutaneous air pocket had been noted on the patient’s examination 4 y...