title: Primary cardiac lymphoma presenting with atrioventricular block.
abstract: Primary cardiac lymphomas (PCL) are extremely rare. Clinical manifestations may be variable and are attributed to location. Here, we report on a case of PCL presenting with atrioventricular (AV) block. A 55 year-old male had experienced chest discomfort with unexplained dyspnea and night sweating. His initial electrocardiogram (ECG) revealed a first degree AV block. Along with worsening chest discomfort and dyspnea, his ECG changed to show second degree AV block (Mobitz type I). Computed tomography (CT) scan showed a cardiac mass (about 7 cm) and biopsy was performed. Pathologic finding confirmed diffuse large B-cell lymphoma. The patient was treated with multi-drug combination chemotherapy (R-CHOP: Rituximab, cyclophoshamide, anthracycline, vincristine, and prednisone). After treatment, ECG changed to show normal sinus rhythm with complete remission on follow-up CT scan.
authors.affiliation: Department of Internal Medicine, Sanggye-Paik Hospital, Inje University College of Medicine, Seoul, Korea.
authors.forename: Sung Woo
authors.initials: SW
authors.lastname: Cho
authors.forename: Yun Jeong
authors.initials: YJ
authors.lastname: Kang
authors.forename: Tae Hoon
authors.initials: TH
authors.lastname: Kim
authors.forename: Sung Kyun
authors.initials: SK
authors.lastname: Cho
authors.forename: Mee Won
authors.initials: MW
authors.lastname: Hwang
authors.forename: Won
authors.initials: W
authors.lastname: Chang
authors.forename: Kun Joo
authors.initials: KJ
authors.lastname: Rhee
authors.forename: Byung Ok
authors.initials: BO
authors.lastname: Kim
authors.forename: Choong Won
authors.initials: CW
authors.lastname: Goh
authors.forename: Kyoung Min
authors.initials: KM
authors.lastname: Park
authors.forename: Jeong Hoon
authors.initials: JH
authors.lastname: Kim
authors.forename: Young Sup
authors.initials: YS
authors.lastname: Byun
authors.forename: Young Jin
authors.initials: YJ
authors.lastname: Yuh