Is the wall eclipsing sign on PACTA pathognomonic for pulmonary artery sarcoma?
The wall eclipsing sign on pulmonary artery CT angiography is a pathognomonic imaging marker for pulmonary artery sarcoma, prompting immediate surgical intervention rather than anticoagulation.
PAS is a rare neoplasm with a poor prognosis, and is easily misdiagnosed as thromboembolic disease. The wall eclipsing sign on PACTA is pathognomonic for PAS, and patients with this sign should be investigated to confirm the diagnosis and should undergo surgical intervention as soon as possible, rather than receiving thrombolytic or anticoagulant therapy.
Gan et al. (Tue,) studied this question.