# Extra-Lobar Lung Sequestration Infarction That Caused Sudden Back Pain: An Adult Case of Surgical Resection

## TL;DR

A 37-year-old woman had sudden back pain caused by a rare lung condition that required emergency surgery for removal.

## Contribution

This case highlights the rare occurrence of extra-lobar lung sequestration infarction in adults and its presentation with sudden back pain.

## Key findings

- Computed tomography identified a 4.5 cm mass on the diaphragm and increasing pleural effusion.
- Surgical removal confirmed a black mass with significant hemorrhage and tissue destruction.
- The condition, though rare in adults, can present suddenly with pain and require emergency intervention.

## Abstract

Ischemia in extra-lobar pulmonary sequestration is rare and mostly occurs in childhood; it is uncommon in adults but can be progressive, necessitating surgical removal.

A 37-year-old woman experienced sudden onset severe back pain and was initially diagnosed with pneumonia. Computed tomography revealed a 4.5 cm mass on the diaphragm and rapidly increasing pleural effusion. Emergency surgery confirmed a black mass that adhered to the diaphragm, which could be bluntly detached, but one was fixed in a cord shape that was detached by an energy device. Pathology showed significant hemorrhage and tissue destruction in extra-lobar pulmonary sequestration.

Extra-lobar pulmonary sequestration infarction, which develops suddenly with pain as the main complaint, is rare and mainly seen in early childhood but can also occur in adults.