Lee, C., Guclu, S. B., Kang, E., Moon, H., Lee, H., Han, W., Kim, H., Jung, J., Shin, D. S. (2026). Association between breast cancer located in the upper outer quadrant (UOQ) and axillary lymph node metastasis (N1 disease): Clinical implications and prognostic significance.. Journal of Clinical Oncology. https://doi.org/10.1200/jco.2026.44.16_suppl.e12764