Which of the following is a common type of treatment for breast cancer?

Surgery is a common type of treatment for breast cancer, as it plays a crucial role in the management of the disease. It typically involves the removal of the tumor from the breast, and depending on the extent of the cancer, it may also include the excision of surrounding healthy tissue and nearby lymph nodes. The primary goal of surgery is to achieve clear margins, meaning that no cancer cells are detected in the tissue surrounding the tumor, which can significantly reduce the risk of recurrence.

Moreover, surgical interventions can be categorized into various types, including lumpectomy, where only the tumor and a small margin of surrounding tissue is removed, and mastectomy, which involves the removal of one or both breasts. Subtypes of these procedures can also be tailored to the individual, taking into account the stage and type of breast cancer and the patient's overall health and preferences.

In contrast, while gene therapy and acupuncture may have their roles in certain contexts—gene therapy being more experimental and not yet a standard treatment for breast cancer, and acupuncture potentially serving as a complementary therapy to manage symptoms—surgery remains a cornerstone of breast cancer treatment. Chiropractic adjustments are not recognized as an effective treatment for breast cancer and do not address the cancer itself.