Characteristics and prognosis of primary gastric adenosquamous carcinoma: A multicenter retrospective study based on propensity score matching

doi:10.4251/wjgo.v18.i5.117580

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World Journal of Gastrointestinal Oncology

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1948-5204

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

Retrospective Study

Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.

World J Gastrointest Oncol. May 15, 2026; 18(5): 117580
Published online May 15, 2026. doi: 10.4251/wjgo.v18.i5.117580

Table 1 Characteristics of the primary gastric adenosquamous carcinoma and gastric adenocarcinoma groups

Characteristic	GAC (n = 468)	PGASC¹ (n = 108)	P value
Age in years (≤ 60/> 60)	163/305	38/70	0.940
Sex (female/male)	152/316	23/85	0.020
Surgical resection (incomplete resection/complete resection)	275/193	64/44	0.920
Primary site (non-cardia/cardia)	361/107	60/48	< 0.001
pT stage² (pT1/pT2/pT3/pT4)	79/51/31/307	2/5/35/66	< 0.001
pN stage² (pN0/pN1/pN2/pN3)	163/76/99/130	21/27/26/34	0.010
pM stage² (pM0/pM1)	434/34	92/16	0.010
Lymphovascular invasion (VI-/VI+)	302/166	48/60	< 0.001
Perineural invasion (PI-/PI+)	315/153	54/54	0.001
Chemotherapy (no/yes)	155/313	53/55	< 0.01

¹This cohort of patients with primary gastric adenosquamous carcinoma included the patients lost to follow-up.

²Based on the American Joint Committee on Cancer (8^th edition) staging system.

GAC: Gastric adenocarcinoma; PGASC: Primary gastric adenosquamous carcinoma; pM: Pathological metastasis; pN: Pathological node; pT: Pathological tumor; VI: Lymphovascular invasion; PI: Perineural invasion.

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Citation: Chen YW, Dong ZY, Wang XX, Cao Y, Lin JX, Chen H, Zhang HY, Xiao YB, Li GX, Li ZR, Chen L, Xia X, Zhang ZZ. Characteristics and prognosis of primary gastric adenosquamous carcinoma: A multicenter retrospective study based on propensity score matching. World J Gastrointest Oncol 2026; 18(5): 117580
URL: https://www.wjgnet.com/1948-5204/full/v18/i5/117580.htm
DOI: https://dx.doi.org/10.4251/wjgo.v18.i5.117580

Chen YW, Dong ZY, Wang XX, Cao Y, Lin JX, Chen H, Zhang HY, Xiao YB, Li GX, Li ZR, Chen L, Xia X, Zhang ZZ. Characteristics and prognosis of primary gastric adenosquamous carcinoma: A multicenter retrospective study based on propensity score matching. World J Gastrointest Oncol 2026; 18(5): 117580 [DOI: 10.4251/wjgo.v18.i5.117580]

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