RT Journal Article T1 Peritumoral immune infiltrates in primary tumours are not associated with the presence of axillary lymph node metastasis in breast cancer: a retrospective cohort study. A1 López, Carlos A1 Bosch-Príncep, Ramón A1 Orero, Guifré A1 Fontoura Balagueró, Laia A1 Korzynska, Anna A1 García-Rojo, Marcial A1 Bueno, Gloria A1 Fernández-Carrobles, Maria Del Milagro A1 Roszkowiak, Lukasz A1 Callau Casanova, Cristina A1 Salvadó-Usach, M Teresa A1 Jaén Martínez, Joaquín A1 Gibert-Ramos, Albert A1 Roso-Llorach, Albert A1 Gras Navarro, Andrea A1 Berenguer-Poblet, Marta A1 Llobera, Montse A1 Gil Garcia, Júlia A1 Tomás, Bárbara A1 Gestí, Vanessa A1 Laine, Eeva A1 Plancoulaine, Benoít A1 Baucells, Jordi A1 Lejeune, Maryléne K1 Axillary lymph nodes K1 Breast cancer K1 Immune response K1 Metastasis K1 Peritumoral AB The axillary lymph nodes (ALNs) in breast cancer patients are the body regions to where tumoral cells most often first disseminate. The tumour immune response is important for breast cancer patient outcome, and some studies have evaluated its involvement in ALN metastasis development. Most studies have focused on the intratumoral immune response, but very few have evaluated the peritumoral immune response. The aim of the present article is to evaluate the immune infiltrates of the peritumoral area and their association with the presence of ALN metastases. The concentration of 11 immune markers in the peritumoral areas was studied in 149 patients diagnosed with invasive breast carcinoma of no special type (half of whom had ALN metastasis at diagnosis) using tissue microarrays, immunohistochemistry and digital image analysis procedures. The differences in the concentration of the immune response of peritumoral areas between patients diagnosed with and without metastasis in their ALNs were evaluated. A multivariate logistic regression model was developed to identify the clinical-pathological variables and the peritumoral immune markers independently associated with having or not having ALN metastases at diagnosis. No statistically significant differences were found in the concentrations of the 11 immune markers between patients diagnosed with or without ALN metastases. Patients with metastases in their ALNs had a higher histological grade, more lymphovascular and perineural invasion and larger-diameter tumours. The multivariate analysis, after validation by bootstrap simulation, revealed that only tumour diameter (OR = 1.04; 95% CI [1.00-1.07]; p = 0.026), lymphovascular invasion (OR = 25.42; 95% CI [9.57-67.55]; p  SN 2167-8359 YR 2020 FD 2020-09-02 LK http://hdl.handle.net/10668/16283 UL http://hdl.handle.net/10668/16283 LA en DS RISalud RD Apr 19, 2025