Treatment modalities in primary gastric lymphoma: effect of rituximab and surgical treatment. A study by the Anatolian Society of Medical Oncology

Kucukoner Mehmet; Cihan Sener; Ummugul Uyeturk; Mesut Seker; Didem Tastekin; Onder Tonyali; Ozan Balakan; Omer Kemal Yazici; Zuhat UrakcI; Abdurrahman Isikdogan; Nuriye Ozdemir; Ali Inal; Muhammed Ali Kaplan; Ali Suner; Sinan Dal; Dogan Uncu; Mahmut Gumus; Melih Cem Boruban; Berna Oksuzoglu; Orhan Ayyildiz; Mustafa Benekli

doi:10.5114/wo.2014.40556

eISSN: 1897-4309
ISSN: 1428-2526

Contemporary Oncology/Współczesna Onkologia

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4/2014
vol. 18

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abstract:

Original paper

Treatment modalities in primary gastric lymphoma: effect of rituximab and surgical treatment. A study by the Anatolian Society of Medical Oncology

Kucukoner Mehmet

,

Cihan Sener

,

Ummugul Uyeturk

,

Mesut Seker

,

Didem Tastekin

,

Onder Tonyali

,

Ozan Balakan

,

Omer Kemal Yazici

,

Zuhat UrakcI

,

Abdurrahman Isikdogan

,

Nuriye Ozdemir

,

Ali Inal

,

Muhammed Ali Kaplan

,

Ali Suner

,

Sinan Dal

,

Dogan Uncu

,

Mahmut Gumus

,

Melih Cem Boruban

,

Berna Oksuzoglu

,

Orhan Ayyildiz

,

Mustafa Benekli

Contemp Oncol (Pozn) 2014; 18 (4): 273–278

DOI: https://doi.org/10.5114/wo.2014.40556

Online publish date: 2014/07/22

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AMA

Mehmet K, Sener C, Uyeturk U, et al. Treatment modalities in primary gastric lymphoma: effect of rituximab and surgical treatment. A study by the Anatolian Society of Medical Oncology. Contemporary Oncology/Współczesna Onkologia. 2014;18(4):273-278. doi:10.5114/wo.2014.40556.

APA

Mehmet, K., Sener, C., Uyeturk, U., Seker, M., Tastekin, D.,  & Tonyali, O. et al. (2014). Treatment modalities in primary gastric lymphoma: effect of rituximab and surgical treatment. A study by the Anatolian Society of Medical Oncology. Contemporary Oncology/Współczesna Onkologia, 18(4), 273-278. https://doi.org/10.5114/wo.2014.40556

Chicago

Mehmet, Kucukoner, Cihan Sener, Ummugul Uyeturk, Mesut Seker, Didem Tastekin, Onder Tonyali,  and Ozan Balakan et al. 2014. "Treatment modalities in primary gastric lymphoma: effect of rituximab and surgical treatment. A study by the Anatolian Society of Medical Oncology". Contemporary Oncology/Współczesna Onkologia 18 (4): 273-278. doi:10.5114/wo.2014.40556.

Harvard

Mehmet, K., Sener, C., Uyeturk, U., Seker, M., Tastekin, D., Tonyali, O., Balakan, O., Yazici, O., UrakcI, Z., Isikdogan, A., Ozdemir, N., Inal, A., Kaplan, M., Suner, A., Dal, S., Uncu, D., Gumus, M., Boruban, M., Oksuzoglu, B., Ayyildiz, O.,  and Benekli, M. (2014). Treatment modalities in primary gastric lymphoma: effect of rituximab and surgical treatment. A study by the Anatolian Society of Medical Oncology. Contemporary Oncology/Współczesna Onkologia, 18(4), pp.273-278. https://doi.org/10.5114/wo.2014.40556

MLA

Mehmet, Kucukoner et al. "Treatment modalities in primary gastric lymphoma: effect of rituximab and surgical treatment. A study by the Anatolian Society of Medical Oncology." Contemporary Oncology/Współczesna Onkologia, vol. 18, no. 4, 2014, pp. 273-278. doi:10.5114/wo.2014.40556.

Vancouver

Mehmet K, Sener C, Uyeturk U, Seker M, Tastekin D, Tonyali O et al. Treatment modalities in primary gastric lymphoma: effect of rituximab and surgical treatment. A study by the Anatolian Society of Medical Oncology. Contemporary Oncology/Współczesna Onkologia. 2014;18(4):273-278. doi:10.5114/wo.2014.40556.

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Aim of the study: Gastrointestinal lymphoma is the most common type of extranodal lymphoma and commonly involved site is the stomach. We have compared the superiority between treatment modalities for primary gastric lymphoma and we want to investigate efficacy of rituximab in gastric lymphoma.

Material and methods: Between April 2002 and December 2011, 146 patients with a histologically confirmed primary gastric lymphoma, initially diagnosed at eight different Cancer Centers within Turkey were evaluated retrospectively. According to the treatment modality, the patients were divided into chemotherapy (CT) alone, chemotherapy and radiotherapy (CRT), surgery and chemotherapy (SCT), surgery along with chemotherapy and radiotherapy (SCRT), and surgery (S) alone groups.

Results: Median follow-up period was 25.5 months. The 5-year EFS (event free survival) and OS (overall survival) rates for the patients were 55% and 62.3% respectively. In Log rank analysis of OS and EFS, we have identified levels of albumin and hemoglobine, IPI score, stage at diagnosis as factors influencing survival. In multivariate analysis of OS and EFS, only albumin and stage at diagnosis were factors independently contributing to survival. There was no statistically significant difference in terms of survival between different treatment modalities (p = 0.707 in EFS and p = = 0.124 in OS). In analysis of patients treated with chemotherapy alone, there was no a statistically significant difference in terms of EFS and OS between chemotherapy regimens with or without rituximab in localized and advanced stage groups (p = 0.264 and p = 0.639). There was no statistical difference in survival rate (EFS and OS) between surgical or non-surgical treatment modalities for localized/advanced stage gastric lymphoma groups (p = 0.519 / p = 0.165).

Conclusions: There are several treatment options due to similar results in different treatment modalities. Also benefit of rituximab treatment in gastric lymphoma is still a controversial subject. Additional prospective trials are definitely required in order to clarify use of rituximab in treatment of extranodal gastric lymphoma.

keywords:

Treatment modalities in primary gastric lymphoma: effect of rituximab and surgical treatment. A study by the Anatolian Society of Medical Oncology

lymphoma, rituximab, prognosis