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Case of plasmablastic lymphoma of the sigmoid colon and literature review
Tomoko Haramura1, Masashi Haraguchi1, Junji Irie1
1Tomoko Haramura, Masashi Haraguchi, Shinichiro Ito, Hirotaka Tokai, Kazumasa Noda, Masachika Kitajima, Shigeki Minami, Keiji Inoue, Department of Surgery, Nagasaki Harbor Medical Center City Hospital, Nagasaki 850-8555, Japan.
Abstract:
Plasmablastic lymphoma (PBL) is a rare form of non-Hodgkin's lymphoma that is associated with human immunodeficiency virus (HIV) infection. Although PBL is most commonly observed in the oral cavity of HIV-positive patients, it can also be observed at extra-oral sites in HIV-negative patients. This report represents an unusual case of HIV-negative PBL that occurred in the sigmoid colon. This patient had a history of systemic lupus erythematosus and an underlying immunosuppressive state from long term steroid therapy. The lymphoma cells were positive for CD138, kappa light chain restriction and Epstein-Barr virus and negative for CD20/L26, CD3, CD79a, UCHL1 (CD45RO) and cytokeratin (AE1/AE3). The patient died approximately 2 mo after the operation. In the present paper, we review cases of PBL of the colon in HIV-negative patients.
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