Rescue of pulmonary artery intra-stent re-stenosis by unzipping an under-sized stent in an adult patient with fibrosing mediastinitis

To the Editor: A 71-year-old male was admitted to the hospital for progressive exertional dyspnea. He had a history of fibrosing mediastinitis (FM)-induced pulmonary vascular stenosis. His right interlobar pulmonary artery had been severely stenosed and implanted with a 6-mm diameter stent (6 mm× 18 mm; PALMAZ®BLUETM, Cordis, Shanghai, China) 6 months before admission, and his left superior pulmonary vein had been implanted with a 9-mm diameter...