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Related Experiment Video

Updated: Jul 4, 2026

Murine Left Pulmonary Hilar Clamp Model of Lung Ischemia Reperfusion Injury

Murine Left Pulmonary Hilar Clamp Model of Lung Ischemia Reperfusion Injury

Published on: April 12, 2024

Extralobar pulmonary sequestration in the hilum.

Chang Chen¹, Hui Zheng

¹Department of Thoracic Surgery, Tongji University Affiliated Shanghai Pulmonary Hospital, Shanghai, China. changchenc@hotmail.com

Asian Cardiovascular & Thoracic Annals

|June 3, 2008

Summary

Extralobar pulmonary sequestration, a rare lung condition, typically forms near the diaphragm. This report details an unprecedented case occurring in the hilum, initially misdiagnosed as a bronchogenic cyst.

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Area of Science:

Thoracic Surgery
Pulmonary Medicine
Diagnostic Imaging

Background:

Extralobar pulmonary sequestration (EPS) is a congenital lung malformation where lung tissue is separated from the normal tracheobronchial tree.
EPS most commonly occurs inferior to the left lower lobe, adjacent to the diaphragm.
Hilar location of EPS is exceptionally rare and poses diagnostic challenges.

Observation:

A 43-year-old female presented with symptoms suggestive of a hilar mass.
Initial imaging and clinical evaluation indicated a hilar bronchogenic cyst.
Surgical exploration revealed an unexpected extralobar pulmonary sequestration in the hilum.

Findings:

The case demonstrates a previously unreported anatomical presentation of extralobar pulmonary sequestration.
The sequestration received its blood supply from the aorta.
Histopathological examination confirmed the diagnosis of pulmonary sequestration.

Implications:

This case expands the known spectrum of anatomical variations for extralobar pulmonary sequestration.
It highlights the importance of considering rare differential diagnoses in hilar masses.
Accurate preoperative diagnosis is crucial for appropriate surgical planning and management of pulmonary sequestration.