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American Journal of Clinical Oncology:
doi: 10.1097/COC.0b013e318271b125
Original Articles: Hematopoietic

Comparison of Therapeutic Outcomes Between Surgical Resection Followed By R-CHOP and R-CHOP Alone for Localized Primary Intestinal Diffuse Large B-cell Lymphoma

Lee, Ho Sup MD*; Park, Lee Chun MD*; Lee, Eun Mi MD*; Shin, Seong Hoon MD*; Ye, Byeong Jin MD; Oh, Sung Yong MD; Song, Moo Kon MD§; Lee, Sang Min MD; Lee, Won Sik MD; Kang, Byung Woog MD; Chang, Myung Hee MD#; Cho, Seok-Goo MD, PhD**; Yahng, Seung Ah MD**; Yoon, Sung-Soo MD, PhD††; Kwon, Ji-hyun MD††; Kim, Yang Soo MD, PhD*

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Objectives: There is no confirmed treatment strategy for primary intestinal diffuse large B-cell lymphoma (DLBL). In this retrospective study, the purpose is to find an appropriate treatment strategy in patients with primary intestinal DLBL undergoing surgery followed by chemotherapy or chemotherapy alone.

Methods: Seventy-six patients were newly diagnosed with DLBL and received treatment between March 2004 and June 2011. Forty-seven patients were treated with surgical resection followed by rituximab combined with cyclophosphamide, adriamycin, vincristine, and prednisolone (R-CHOP), and 29 patients were treated with R-CHOP chemotherapy alone.

Results: The characteristics of the patients were as follows: the median age was 56.5 years (range, 15 to 85 y) with a female to male ratio of 1.00:1.45. There was no significant difference in patient characteristics between the 2 groups. The estimated 3-year progression-free survival rates (PFS) and overall survival rates (OS) of surgery followed by R-CHOP (surgery/R-CHOP) and R-CHOP alone (R-CHOP) groups were 92.2% and 74.8% (P=0.009) and 94.2% and 80.7% (P=0.049), respectively. In univariate analysis, significant differences were seen in estimated PFS and OS rates when comparing Lugano stages I and II1 with II2 and IIE (P=0.006 and 0.036), low and low-intermediate risk with high-intermediate risk (P=0.004 and 0.000), and surgery/R-CHOP group with R-CHOP group (P=0.009 and 0.049), respectively. In multivariate analysis, there were no independent predictive factors for survival.

Conclusions: Patients treated with surgery followed by R-CHOP seemed to have a higher survival rate than those treated with R-CHOP alone. There were no significant prognostic factors for survival, but there were possible prognostic factors such as Lugano stage, International Prognostic Index risk, and treatment modality for PFS and OS.

© 2014 by Lippincott Williams & Wilkins, Inc


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