We present the case of a 20-year-old male patient presenting a right lower intralobar pulmonary "horseshoe" sequestration extending into the left cavity supplied by 4 aberrant arteries from the thoracic descending aorta. The surgical approach for this exceptional and challenging presentation was based on thorough analysis of the chest computed tomography scan aided by 3-dimensional reconstructions. The latter helped us better understand this complex malformation. Surgery was done by robot-assisted bilateral approach with en bloc extraction through the left side.
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