title: Endobronchial mass formation after endobronchial ultrasound-transbronchial needle aspiration mimicking implantation metastasis.
abstract: Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) has been widely used for diagnosing intrathoracic lymphadenopathy. Here, we present two cases of endobronchial polyp formation after an EBUS-TBNA for suspicious malignant lymph nodes. An inflammatory polyp should be considered as a possible differential diagnosis for a newly developed mass after an EBUS-TBNA.
authors.affiliation: Department of Pulmonary and Critical Care Medicine Asan Medical Center University of Ulsan College of Medicine Seoul Korea.
authors.forename: Soo Han
authors.initials: SH
authors.lastname: Kim
authors.affiliation: Department of Pulmonary and Critical Care Medicine Asan Medical Center University of Ulsan College of Medicine Seoul Korea.
authors.forename: Yunkyoung
authors.initials: Y
authors.lastname: Lee
authors.affiliation: Department of Pulmonary and Critical Care Medicine Asan Medical Center University of Ulsan College of Medicine Seoul Korea.
authors.forename: Shinhee
authors.initials: S
authors.lastname: Park
authors.affiliation: Department of Pulmonary and Critical Care Medicine Asan Medical Center University of Ulsan College of Medicine Seoul Korea.
authors.forename: Chang Min
authors.initials: CM
authors.lastname: Choi
authors.affiliation: Department of Oncology/Hematology Daegu Catholic University Hospital Daegu Korea.
authors.forename: Jungmin
authors.initials: J
authors.lastname: Jo
authors.affiliation: Department of Oncology Asan Medical Center University of Ulsan College of Medicine Seoul Korea.
authors.forename: Jae Cheol
authors.initials: JC
authors.lastname: Lee
keywords: Endoscopic ultrasound guided needle aspiration; implantation; metastasis; tumor