title: A Case of Rectal Squamous Cell Carcinoma with Metachronous Diffuse Large B Cell Lymphoma in an HIV-Infected Patient.
abstract: Diffuse large B cell lymphoma (DLBCL) is one of the most common acquired immune deficiency syndrome (AIDS)-defining malignancies among human immunodeficiency virus-infected patients, and rectal cancer has recently emerged as a prevalent non-AIDS-defining malignancy. We report a case of rectal squamous cell carcinoma that was metachronous with DLBCL in an HIV-infected patient who was receiving highly active antiretroviral therapy. The patient was diagnosed with DLBCL and showed complete remission after chemotherapy. Follow-up imaging showed increased uptake at the rectum, previously treated as lymphoma. Repeated biopsy was performed and squamous cell carcinoma of the rectum was reported. After concurrent chemoradiation therapy, curative resection was performed.
authors.affiliation: Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Heun
authors.initials: H
authors.lastname: Choi
authors.affiliation: Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Hye Won
authors.initials: HW
authors.lastname: Lee
authors.affiliation: Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Hea Won
authors.initials: HW
authors.lastname: Ann
authors.affiliation: Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Jae Kyung
authors.initials: JK
authors.lastname: Kim
authors.affiliation: Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Hua Pyong
authors.initials: HP
authors.lastname: Kang
authors.affiliation: Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Sun Wook
authors.initials: SW
authors.lastname: Kim
authors.affiliation: Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea. ; AIDS Research Institute, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Nam Su
authors.initials: NS
authors.lastname: Ku
authors.affiliation: Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea. ; AIDS Research Institute, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Sang Hoon
authors.initials: SH
authors.lastname: Han
authors.affiliation: Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea. ; AIDS Research Institute, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: June Myung
authors.initials: JM
authors.lastname: Kim
authors.affiliation: Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea. ; AIDS Research Institute, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Jun Yong
authors.initials: JY
authors.lastname: Choi
keywords: AIDS-related lymphoma; HIV; Oncogenic viruses; Squamous cell carcinoma