Please assess the completion status of the following clinical trial:

Trial Title: Phyllodes Tumor Partial Breast Radiation Study

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* Histologic proof of phyllodes tumor of borderline or malignant grade, as first defined by Pietruszka and modified by Azzopardi and adopted by the World Health Organization (1,2,17):~  * Borderline malignant: 5-9 mitoses/10 HPF, pushing or infiltrating margins, 2+ (moderate) stromal cellularity and atypia.~ * Malignant: 10 or more mitoses / 10 HPF, predominantly infiltrating margins, usually 3+ (severe) stromal cellularity and atypia but occasionally 2+.~* The tumor has been excised with a breast-conserving resection and there is no tumor seen at any of the margins of the resection.~* No prior breast carcinoma or ductal carcinoma in situ in the ipsilateral breast. Patients with a local recurrence of a previously excised phyllodes tumor are eligible if the recurrence is in the area of the previous excision.~* No history of irradiation of the ipsilateral breast.~* No evidence of other areas worrisome for cancer on physical examination and mammography of the ipsilateral breast.~* Age \>18 years.~* Informed consent.~* Documentation that either:~  1. the patient's medical insurance company has certified that they will pay for the cost of radiation therapy treatments, or~ 2. a letter from the patient indicating that they explicitly understand the costs of radiation therapy and that the sponsor (Principal Investigator) of this study will not be held responsible for these costs.~Exclusion Criteria:~* Histologically positive margins.~* Breast carcinoma or ductal carcinoma in situ in the ipsilateral breast.~* A history of irradiation to the ipsilateral breast.~* Pregnancy. A urine pregnancy test will be performed on each fertile premenopausal female prior to entry into the study. Patients with childbearing potential must employ effective contraception during the radiation therapy.~* A radiation planning CT scan which demonstrates a target lumpectomy cavity that is not clearly delineated or a target lumpectomy cavity/whole breast reference volume \> 30%.~* Unacceptable radiation therapy quality assurance parameters, as defined in Section 5 of the protocol.

- Gender: FEMALE
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Partial breast radiation after lumpectomy (Type: OTHER): Radiation per NSABP B-39/R0413 protocol.

Based on this trial design, predict the completion outcome and termination type (if applicable).