Invasive Lobular Carcinoma is a type of breast cancer that begins in the lobules, which are the glands that produce milk. It is characterized by small, non-cohesive cells that invade surrounding breast tissue. This cancer often grows more slowly than other types and may not form a distinct lump, making it harder to detect in its early stages. Diagnosis typically involves imaging tests like mammograms and ultrasounds, followed by a biopsy to confirm the presence of cancer cells. Treatment options may include surgery, radiation therapy, chemotherapy, and hormonal therapy, depending on the cancer's stage and characteristics.