Pulmonary Artery Angiomatoid Fibrous Histiocytoma Mimicking a Large Pulmonary Embolism. (11th December 2022)

• Record Type: Journal Article
• Authors: Haug, Logan P.; Zarka, Matthew A.; D'Cunha, Jonathan; Downey, Francis X.; Seetharam, Mahesh; Yang, Ming
• Is Part Of: Clinical nuclear medicine. Volume 47:Number 12(2022)
• Page Start: e738
• Page End: e739
• Publication Date: 2022-12-11
• Subjects: 18F-FDG PET/CT -- angiomatoid fibrous histiocytoma -- pulmonary artery -- V/Q scan; Nuclear medicine -- Periodicals; Radioisotope scanning -- Periodicals; Nuclear Medicine -- Periodicals; 616.07575
• DOI: 10.1097/RLU.0000000000004306
• Languages: English
• ISSNs: 0363-9762

Abstract

Abstract: A 39-year-old man presented with progressive dyspnea and lower extremity edema. Doppler ultrasound demonstrated bilateral leg partially occluded venous thromboses. A V/Q scan revealed a mismatched perfusion defect involving the entire right middle and lower lobes. Subsequent CT pulmonary angiogram revealed a mass lesion occluding the right interlobar pulmonary artery. Endobronchial ultrasound–guided fine-needle aspiration of the mass was concerning for neoplasm. 18 F-FDG PET/CT demonstrated marked hypermetabolism of the mass lesion. Patient underwent transmediastinal right pneumonectomy with histopathologic diagnosis of pulmonary artery angiomatoid fibrous histiocytoma, a rare etiology mimicking large pulmonary artery embolism.