Breast Cancer Recurrence Risk Calculator

A grade 2 breast cancer indicates moderately differentiated cells that grow faster than normal tissue but slower than high-grade tumors. When confined locally, the prognosis is generally favorable, especially when combined with clear surgical margins and appropriate adjuvant radiation or hormone therapy. The specific recurrence risk will depend heavily on whether adjacent lymph nodes are clear and the hormone receptor status of the tumor.

Key risk factors include a higher histological tumor grade, greater tumor size, positive surgical margins where cancer cells remain at the edge of removed tissue, lymph node involvement, and younger age at initial diagnosis. Additionally, certain biological characteristics like hormone receptor negativity or HER2-positive status without targeted blockade can elevate the likelihood of the disease returning either locally or distantly.

Local recurrence means that cancer cells have returned in the exact same location where the original tumor was first detected. For individuals who underwent a lumpectomy, this typically means a new tumor developing in the remaining breast tissue. For those who had a mastectomy, local recurrence refers to cancer returning in the chest wall skin or underlying tissue. It is distinct from regional or distant metastasis.

Regional recurrence occurs when cancer cells reappear in the lymph nodes close to the original tumor site. This most frequently involves the lymph nodes located under the armpit, near the collarbone, or inside the chest cavity along the breastbone. While more serious than an isolated local recurrence, regional recurrence is still treated with curative intent using a combination of surgery, radiation, and systemic medications.