TY - JOUR T1 - Expansile cough impulse: a useful clinical sign for empyema necessitans JF - BMJ Case Reports JO - BMJ Case Reports DO - 10.1136/bcr-2019-229696 VL - 12 IS - 3 SP - e229696 AU - Sayantan Banerjee AU - Sagnik Biswas AU - Animesh Ray AU - Venkatesh Vaithiyam Y1 - 2019/03/01 UR - http://casereports.bmj.com/content/12/3/e229696.abstract N2 - ER -