Final answer:
The treatment for smaller lesions of DCIS typically includes lumpectomy followed by radiation therapy. Hormonal therapy may also be used in hormone receptor-positive cases.
Step-by-step explanation:
The treatment (tx) for smaller lesions of Ductal Carcinoma In Situ (DCIS) often involves a combination of localized surgery and radiation therapy. The main surgical option is lumpectomy, which is the removal of the tumor and a small margin of surrounding healthy tissue. In many cases, a lumpectomy is followed by radiation therapy to eradicate any remaining cancer cells and reduce the risk of recurrence. Depending on the patient's individual case, hormonal therapy such as tamoxifen may also be recommended if the cancer is hormone receptor-positive.