title: Henoch-Schönlein Purpura with Concurrent Cytomegalovirus Duodenitis.
abstract: Henoch-Schönlein purpura (HSP) is a systemic vasculitis involving the small vessels with distinct clinical features. The etiology of HSP is diverse, and viral infection is one of the many predisposing factors. Cytomegalovirus (CMV) infection mostly affects immune-suppressed patients, but rarely patients with normal immunity can also be affected. Authors experienced a case of HSP patient, with underlying small-cell lung cancer (SCLC) with CMV duodenitis. This is a rare case of HSP diagnosed in SCLC patient with predisposing factor of CMV infection.
authors.affiliation: Division of Oncology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
authors.forename: Sae Bom
authors.identifier: https://orcid.org/0000-0003-4433-4662
authors.initials: SB
authors.lastname: Shin
authors.affiliation: Department of Pathology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
authors.forename: Yeong Jin
authors.initials: YJ
authors.lastname: Choi
authors.affiliation: Division of Oncology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea. befamiliar@catholic.ac.kr.
authors.forename: Jieun
authors.identifier: https://orcid.org/0000-0002-2656-0650
authors.initials: J
authors.lastname: Lee
authors.affiliation: Division of Oncology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
authors.forename: Bong Gye
authors.initials: BG
authors.lastname: Kwak
authors.affiliation: Division of Oncology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
authors.forename: Yong Hee
authors.initials: YH
authors.lastname: Kim
authors.affiliation: Division of Oncology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
authors.forename: Kyung Sun
authors.initials: KS
authors.lastname: Ha
authors.affiliation: Division of Oncology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea. jinkang@catholic.ac.kr.
authors.forename: Jin Hyoung
authors.initials: JH
authors.lastname: Kang
keywords: Cytomegalovirus; Henoch-Schönlein purpura; Small-cell lung cancer