Japanese

Rectal MALT Lymphoma Showing the Morphological Features of“Lymphoid Follicular Proctitis” Masaya Ohana 1,2 , Yoichiro Kobashi 3 , Fumihiko Nakamura 4 , Takaaki Yoshikawa 2 , Atsushi Mima 2 , Hiroki Sonoyama 2,5 , Shino Kikuchi 2,6 , Makoto Okabe 2 , Toshiyuki Morisawa 2 , Seiji Shio 2 , Shinji Miyajima 2 , Hajime Kida 2 , Akihiro Okano 2 , Satoshi Okinaga 1,2 , Fusako Kusumi 2 , Motoshige Nabeshima 2 1Endoscopy Center, Tenri Hospital, Tenri, Japan 2Department of Gastroenterology, Tenri Hospital, Tenri, Japan 3Department of Clinical Pathology, Tenri Hospital, Tenri, Japan 4Department of Hematology, Tenri Hospital, Tenri, Japan 5Second Department of Internal Medicine, Shimane University, School of Medicine, Izumo, Japan 6Department of Gastroenterology, Takatsuki Red Cross Hospital, Takatsuki, Japan Keyword: 直腸 , MALTリンパ腫 , クラミジア直腸炎 , リンパ濾胞 pp.1653-1658
Published Date 2013/10/25
DOI https://doi.org/10.11477/mf.1403113975
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 A 31-year-old woman complained of bloody mucous stool. Recto-sigmoidoscopy revealed multiple elevated lesions in the rectum The biopsy showed marked hyperplasia of lymphoid follicules. Several tests for chlamydia infection were negative. Thirty-two months later, repeated biopsies revealed characteristic findings of MALT lymphoma, which contained marked infiltration of B lymphocytes, accompanied by lymphoepithelial lesions. Treatment with rituximab improved the patient's symptom and endoscopic findings. MALT lymphoma might be the correct diagnosis of such rectal lesions which used to be called“lymphoid follicular proctitis”.

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