Anatomical laterality of primary intestinal diffuse large B-cell lymphoma independently stratifies survival: New prognostic nomogram incorporating tumor location

doi:10.3748/wjg.v32.i7.115406

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World Journal of Gastroenterology

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1007-9327

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Retrospective Study

World J Gastroenterol. Feb 21, 2026; 32(7): 115406
Published online Feb 21, 2026. doi: 10.3748/wjg.v32.i7.115406

Table 1 Baseline characteristics of primary intestinal diffuse large B-cell lymphoma patients in the SEER training cohort before and after propensity score matching, n (%)

Characteristics	Before propensity score matching			After propensity score matching
Characteristics	Right side (n = 3358)	Left side (n = 474)	SMD	Right side (n = 1063)	Left side (n = 474)	SMD
Age			0.071			0.004
< 50	493 (14.7)	64 (13.5)		155 (14.6)	64 (13.5)
50-69	1269 (37.8)	168 (35.4)		396 (37.3)	168 (35.4)
70-89	1486 (44.2)	225 (47.5)		477 (44.9)	225 (47.5)
≥ 90	110 (3.3)	17 (3.6)		35 (3.3)	17 (3.6)
Gender			0.010			0.006
Female	1263 (37.6)	176 (37.1)		396 (37.3)	176 (37.1)
Male	2095 (62.4)	298 (62.9)		667 (62.7)	298 (62.9)
Race			0.060			0.039
White	2787 (83.0)	403 (85.0)		889 (83.6)	403 (85.0)
Black	177 (5.3)	24 (5.1)		55 (5.2)	24 (5.1)
Other	394 (11.7)	47 (9.9)		119 (11.2)	47 (9.9)
Stage			0.056			< 0.001
Stage I/II	2464 (73.4)	336 (70.9)		749 (70.5)	336 (70.9)
Stage III/IV	894 (26.6)	138 (29.1)		314 (29.5)	138 (29.1)
Radiation			0.284			0.002
Yes	192 (5.7)	67 (14.1)		128 (12.0)	67 (14.1)
No/unknown	3166 (94.3)	407 (85.9)		935 (88.0)	407 (85.9)
Surgery			0.581			0.001
Yes	2225 (66.3)	182 (38.4)		477 (44.9)	182 (38.4)
No	1133 (33.7)	292 (61.6)		586 (55.1)	292 (61.6)
Chemotherapy			0.099			0.002
Yes	2481 (73.9)	329 (69.4)		760 (71.5)	329 (69.4)
No/unknown	877 (26.1)	145 (30.6)		303 (28.5)	145 (30.6)

SMD: Standardized mean difference.

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Citation: Zeng RX, Wang CQ, Yang H, Sun P, Liu PP, Wei LC, Chen TT, Wang Z, Huang H, Li ZM, Tian XP, Wang Y. Anatomical laterality of primary intestinal diffuse large B-cell lymphoma independently stratifies survival: New prognostic nomogram incorporating tumor location. World J Gastroenterol 2026; 32(7): 115406
URL: https://www.wjgnet.com/1007-9327/full/v32/i7/115406.htm
DOI: https://dx.doi.org/10.3748/wjg.v32.i7.115406

Zeng RX, Wang CQ, Yang H, Sun P, Liu PP, Wei LC, Chen TT, Wang Z, Huang H, Li ZM, Tian XP, Wang Y. Anatomical laterality of primary intestinal diffuse large B-cell lymphoma independently stratifies survival: New prognostic nomogram incorporating tumor location. World J Gastroenterol 2026; 32(7): 115406 [PMID: 41694495 DOI: 10.3748/wjg.v32.i7.115406]

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