Intralobar pulmonary sequestration

Case contributed by Dr Vinay V Belaval


History of recurrent lower respiratory tract infections and hemoptysis.

Patient Data

Age: 25 years
Gender: Male

Lung window images of CT angiogram of the chest showed heterogeneous consolidation, predominantly in posterior basal segment of the left lower lobe with punctate calcification and tiny focal cavitations measuring approximately 7.7 x 9.0 x 10 cm.

The lesion is supplied by two large systemic arterial branches from the left lateral wall of distal descending thoracic aorta measuring 10-12 mm in diameter. Venous drainage of the lesion was seen into the left inferior pulmonary vein.

Case Discussion

Imaging features are consistent with intralobar pulmonary sequestration. CT showed heterogeneous large consolidation in posterior basal segment of left lower lobe, which was supplied by two good caliber systemic arterial branches from distal descending thoracic aorta and subsequent venous drainage into left inferior pulmonary vein. These features are consistent with intralobar pulmonary sequestration. 

Intralobar pulmonary sequestration has systemic arterial supply and pulmonary venous drainage whereas extralobar pulmonary sequestration has systemic venous drainage. 

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Case information

rID: 66528
Published: 26th Feb 2019
Last edited: 14th Aug 2019
System: Chest
Inclusion in quiz mode: Included
Institution: Belcity Scan and Diagnostic Centre

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