Spontaneous Mediastinal Emphysema Associated with the Use of Synthetic Cannabinoid (Bonsai).

Spontaneous Mediastinal Emphysema (SME), which is a rarely seen case is defined as the detection of free air in the mediastinum without any trauma. Although rare, some cases secondary to drug use have been reported. In this study, two SME cases that developed due to the use of a synthetic cannabinoid known as "bonzai", which has recently become widespread in Turkey, are presented.