Brief report

Tension gastrothorax complicating post-traumatic rupture of the diaphragm

Traumatic tension gastrothorax is a type of obstructive shock similar to tension pneumothorax. However, tension gastrothorax is not well known among emergency physicians, and no consensus has yet been reached on management during initial trauma care. We present a case of traumatic tension gastrothorax in which tube thoracostomy was performed based solely on clinical findings very similar to tension pneumothorax, followed by emergency laparotomy.

A 24-year-old male motorcyclist was brought to our emergency medical center after being struck by a motor vehicle. He was in respiratory failure and hypotensive shock with findings suggestive of pneumothorax. Although the physical findings were not fully in line with tension pneumothorax, we immediately performed finger thoracostomy. Subsequent radiography revealed left diaphragmatic rupture with hernia. After unsuccessful attempts to decompress the stomach with a nasogastric tube, immediate emergency laparotomy was performed. During the operation, the stomach, which had prolapsed through the ruptured diaphragm into the thoracic cavity, was manually returned to the abdominal cavity. The ruptured diaphragm was repaired with sutures.

Although distinguishing between tension pneumothorax and tension gastrothorax based on physical examination alone is difficult, tension gastrothorax requires careful attention to avoid intrapleural contamination from gastric injury. In addition, relying solely on stomach decompression with a nasogastric tube or delaying laparotomy could lead to cardiac arrest.

When tension pneumothorax is suspected during initial trauma care, tension gastrothorax should also be considered as a differential diagnosis and treated with immediate diaphragmatic repair once identified.

The incidence of Bochdalek hernias in adults is much more than previously reported. Though most of these are asymptomatic. Tension gastrothorax is a rare complication of these. Literature about the endoscopic management of a tension gastrothorax is extremely sparse. In this case report, we describe how we combined laparoscopy and thoracoscopy in an emergency setting to manage a case of tension gastrothorax with an underlying Bochdalek hernia defect in an adult.

A 27 year old male presented to our emergency with tension gastrothorax and a gastric volvulus with an underlying Bochdalek hernia defect, exhibiting the classical Borchardt’s triad. The patient underwent an emergency surgery, through a minimally invasive approach wherein the herniated contents were reduced, the gastric volvulus detorted and a repair of the diaphragmatic defect was performed. His post-operative course was uneventful.

Tension gastrothorax, is a diagnostic challenge as an air-fluid level in the thorax on radiology with worsening respiration causes as many as 38% of these cases to be misdiagnosed as tension pneumothorax, hydro-pneumothorax, hemothorax, empyema, effusion or pneumonia. Various techniques of decompression have been described in literature but, employing those, in case of a misdiagnosis may have catastrophic outcomes.

We strongly recommend employing a combined laparoscopic and thoracoscopic approach for an emergency repair of a tension gastrothorax in a hemodynamically stable patient as, it poses all the advantages of minimal access surgery and is available, at smaller centres, even in an emergency.

We present a fatal case of a gastrothorax due to an acute gastric volvulus resulting from a Bochdalek hernia. A 5-year-old boy without previous medical history was brought to our institution in a state of cardiopulmonary arrest and was subsequently pronounced dead. Postmortem computed tomography (PMCT) of the torso showed abdominal organs involving the lower section of the esophagus up to the entire stomach, the left side of the transverse colon, the entire spleen, and the tail of the pancreas herniated into the left thoracic cavity. The stomach was markedly expanded and a mesentero-axial (rotation along the short axis) volvulus was observed, displacing mediastinal structures to the right side and depressing the diaphragmatic contour. A PMCT of the thorax at the lung window setting revealed displacement of bilateral lungs. The bilateral lungs were severely atelectatic and congested. The PMCT findings mentioned above were consistent with the autopsy findings. PMCT can provide useful information for the diagnosis in cases we initially cannot predict any significant changes, for example, organ displacement.

Tension gastrothorax is a life-threatening condition and presents dramatically. It develops when the stomach herniates through a diaphragmatic defect into the thorax and distends with gas and/or fluid causing mediastinal shift. It is commonly misdiagnosed as tension pneumothorax which results in significant morbidity and mortality. In this article we report our experience of three cases with a spectrum of aetiology and a comprehensive literature review of tension gastrothorax in children. We propose an algorithm for the management of tension gastrothorax.