The lymphatic drainage in the breasts is very applicable to oncology due to the fact breast most cancers is widespread into the mammary gland, and most cancers cells can metastasize (crack absent) from a tumor and be dispersed to other parts of the body by means of the lymphatic method. https://grok.com/share/c2hhcmQtMw%3D%3D_5ad6450c-533d-442c-a09c-9f7bce1babfb