• Steffi Kang Ting Chan, Daryl Jian'an Tan, and Maria Dhahrani Martinez Aman.
• Division of Anaesthesiology and Perioperative Medicine, Singapore General Hospital, Block 5 Level 2, Outram Road, Singapore, 169608, Singapore.
• BMC Anesthesiol. 2022 Jun 24; 22 (1): 195.

BackgroundCongenital diaphragmatic defects are rare, with most cases presenting in childhood. Diagnosis in adulthood is usually incidental or when symptoms develop. We present a case of a strangulated Bochdalek hernia complicated by possible tension pneumothorax and iatrogenic bowel injury in a healthy young male.Case PresentationA 23-year-old Chinese man initially presented with complaints of mild back pain and was discharged with symptomatic treatment. He presented again 3 days later, with dyspnea and left upper back pain and was haemodynamically unstable and hypoxic. A chest x-ray was reported as a moderately large left-sided pneumothorax with herniation of bowel into the left hemithorax. Needle decompression resulted in feculent fluid being aspirated with no resolution of symptoms. The patient required an immediate transfer to the operating theatre for surgical intervention of his left diaphragmatic rupture, complicated by visceral herniation and left tension pneumothorax, with accidental puncture of the herniated bowel. He underwent an emergent laparotomy with requirements for rapid lung isolation and continued aggressive resuscitation.ConclusionsPatients with congenital diaphragmatic hernias may present in adulthood, either incidentally or emergently. In the well adult patient with good reserves, these initial symptoms may be mild, and may be symptomatically treated with no further workup. However, patients may deteriorate rapidly once their compensatory mechanisms are exhausted. This is the first reported case of a patient with diaphragmatic rupture and bowel herniation, complicated by iatrogenic tension pneumothorax. This rare case illustrates the speed at which a diaphragmatic rupture may progress, possible pitfalls and offers insights on how a misdiagnosis may be avoided.© 2022. The Author(s).

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