# Spontaneous Hemothorax from Pulmonary Intralobar Sequestration: A Case Report

## TL;DR

A rare case of spontaneous hemothorax caused by a pulmonary sequestration is reported, highlighting the importance of timely diagnosis and intervention.

## Contribution

This case report adds to the limited literature on pulmonary intralobar sequestration causing atraumatic hemothorax.

## Key findings

- Pulmonary intralobar sequestration can lead to spontaneous hemothorax and cardiac arrest.
- Accurate interpretation of imaging is crucial for timely diagnosis and management.
- Delayed recognition of hemothorax can result in fatal outcomes.

## Abstract

Pulmonary sequestration is a rarely reported phenomenon where aberrant lung tissue exists independently from the rest of the tracheobronchial network. Complications may include hemothorax; however, there is a paucity of descriptions of this condition in the literature.

We describe a case of a pulmonary intralobar sequestration resulting in atraumatic tension hemothorax. A 73-year-old woman presented to our facility in extremis and with complaints of acute-onset flank pain. Her evaluation was notable for a large pulmonary sequestration with a presumed, moderate-sized effusion; however, initial review did not reveal an obvious underlying cause for her symptoms. Shortly after her arrival to the emergency department (ED) she experienced a cardiac arrest. On secondary review of her computed tomographic angiography, it was determined that what was previously thought to be a pleural effusion was a large hemothorax. Following this finding, a finger thoracostomy was performed, which resulted in the immediate evacuation of hemothorax. The thoracostomy was then converted into an ED thoracotomy to assess for active hemorrhage with brief return of spontaneous circulation. Prior to proceeding with emergent operative intervention, the patient’s spouse requested that all further resuscitative efforts cease, and the patient was allowed to expire. In a review of the case, it was determined that the patient suffered from cardiac arrest due to a spontaneous hemothorax secondary to a large intralobar pulmonary sequestration.

Pulmonary intralobar sequestration can result in spontaneous hemorrhage with fatal results. Early and correct interpretation of imaging and surgical intervention are crucial in ED management.