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• W3032706218 abstract "e16535 Background: Despite low- and middle-income countries representing 80% of esophageal cancer global burden, TNM staging is based on data from the Worldwide Esophageal Cancer Collaboration (WECC) that is mainly composed of patients from developed countries. Notably, 87.8% of patients staged after neoadjuvant chemoRT in the WECC were from North America or Europe and only 0.09% (N = 7) from Latin America (LA), raising questions about its applicability. We wanted to see if the characteristics of patients undergoing neoadjuvant chemoradiation in LA were representative of patients in the WECC. Methods: We retrospectively identified patients with esophageal adenocarcinoma (EAC) and squamous cell carcinoma (ESCC) who underwent chemoRT at Hospital de Clínicas de Porto Alegre (HCPA), an academic hospital in southern Brazil, and compared their clinicopathological features, treatments and outcomes data with WECC patients. WECC data were extracted from previous publications. Results: Compared to WECC, there were no differences in age (ESCC: 61±7.7 vs. 61±9.4, P = 0.91; EAC: 62±7.2 vs. 61±9.8, P = 0.67) and sex (female: 30.0% vs. 33.2%, P = 0.64; 30.8% vs. 11.6%, P = 0.06). However, we found statistically significant differences in histology (ESCC: 79.4% vs. 26.5%, P < 0.001), PS 0/1/≥2 (ESCC: 24/70/6% vs. 50.6/41.7/7.7%, P = 0.002; EAC: 38.5/61.5/0% vs. 34.9/61.5/3.6%, P = 0.91), active tobacco use (62% vs 27.8%, P < 0.001; 38.5% vs. 15.7%, P < 0.001), weight loss (8.4±5.8Kg vs. 2.6±6Kg, P < 0.001; 14.0±11.6Kg vs. 3,6±7,1Kg, P < 0.001), location (upper/middle/lower: 0/30/70% vs. 16.3/46.6/37.1%, P < 0.001; 0/0/100% vs. 0.7/3/96.3%, P = 0.63) and lymphadenectomy extension ( > 20 resected lymph nodes: 8.6% vs. 38.1%, P < 0.001; 0% vs. 37.9%, P = 0.027). There were no statistically significant differences in pathologic stage (Table) or overall survival in 30 days and 1 year from treatment decision (97.7% vs 98%, P = 0.69; 74.7% vs 75%, P = 0.78). Conclusions: Despite clinically significant differences in presentation were found, they did not implicate worse prognosis in this analysis. [Table: see text]" @default.
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• W3032706218 date "2020-05-20" @default.
• W3032706218 modified "2023-09-26" @default.
• W3032706218 title "Clinicopathological features and outcomes of patients with esophageal cancer undergoing neoadjuvant chemoradiation (chemoRT) in Southern Brazil: A comparison to the Worldwide Esophageal Cancer Collaboration." @default.
• W3032706218 doi "https://doi.org/10.1200/jco.2020.38.15_suppl.e16535" @default.
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