title: DiGeorge syndrome who developed lymphoproliferative mediastinal mass.
abstract: DiGeorge syndrome is an immunodeficient disease associated with abnormal development of 3rd and 4th pharyngeal pouches. As a hemizygous deletion of chromosome 22q11.2 occurs, various clinical phenotypes are shown with a broad spectrum. Conotruncal cardiac anomalies, hypoplastic thymus, and hypocalcemia are the classic triad of DiGeorge syndrome. As this syndrome is characterized by hypoplastic or aplastic thymus, there are missing thymic shadow on their plain chest x-ray. Immunodeficient patients are traditionally known to be at an increased risk for malignancy, especially lymphoma. We experienced a 7-year-old DiGeorge syndrome patient with mediastinal mass shadow on her plain chest x-ray. She visited Severance Children's Hospital hospital with recurrent pneumonia, and throughout her repeated chest x-ray, there was a mass like shadow on anterior mediastinal area. We did full evaluation including chest computed tomography, chest ultrasonography, and chest magnetic resonance imaging. To rule out malignancy, video assisted thoracoscopic surgery was done. Final diagnosis of the mass which was thought to be malignancy, was lymphoproliferative lesion.
authors: Department of Pediatrics, Yonsei University College of Medicine, Severance Children's Hospital, Seoul, Korea.
authors: Kyu Yeun
authors: KY
authors: Kim
authors: Department of Pediatrics, Yonsei University College of Medicine, Severance Children's Hospital, Seoul, Korea.
authors: Ji Ae
authors: JA
authors: Hur
authors: Department of Pediatrics, Yonsei University College of Medicine, Severance Children's Hospital, Seoul, Korea.
authors: Ki Hwan
authors: KH
authors: Kim
authors: Department of Pathology, Yonsei University College of Medicine, Severance Children's Hospital, Seoul, Korea.
authors: Yoon Jin
authors: YJ
authors: Cha
authors: Department of Radiology, Yonsei University College of Medicine, Severance Children's Hospital, Seoul, Korea.
authors: Mi Jung
authors: MJ
authors: Lee
authors: Department of Pediatrics, Yonsei University College of Medicine, Severance Children's Hospital, Seoul, Korea.
authors: Dong Soo
authors: DS
authors: Kim
keywords: DiGeorge syndrome; Lymphoproliferative disorders; Mediastinal neoplasms