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Radiation therapy for intraductal carcinoma. Is it an equal alternative?
M J Silverstein1, J R Waisman, E D Gierson
1Breast Center, Van Nuys, Calif 91405.
Archives of Surgery (Chicago, Ill. : 1960)
|April 1, 1991
Summary
Intraductal carcinoma treatment outcomes show mastectomy is superior to radiation therapy, with fewer local recurrences. Comedo subtype is more aggressive, warranting cautious consideration of conservative therapies.
Area of Science:
- Oncology
- Surgical Oncology
- Radiation Oncology
Background:
- Intraductal carcinoma is a non-invasive form of breast cancer.
- Treatment options include mastectomy and radiation therapy.
- Understanding recurrence patterns is crucial for optimal patient management.
Purpose of the Study:
- To compare the efficacy of mastectomy versus radiation therapy for intraductal carcinoma.
- To evaluate the impact of histological subtype (comedo vs. noncomedo) on recurrence.
- To assess the necessity of axillary lymph node dissection.
Main Methods:
- Retrospective analysis of 213 patients with intraductal carcinoma.
- Patients were treated with either mastectomy (109) or radiation therapy (104).
- Local recurrence rates, histological subtypes, and survival data were analyzed.
Main Results:
- Eight local recurrences observed: 7 with radiation therapy, 1 with mastectomy.
- Seven recurrences in comedocarcinomas, 1 in a noncomedo tumor.
- 38% of comedo recurrences were invasive; 5-year survival was 100% for all subgroups.
Conclusions:
- Mastectomy demonstrates a lower local recurrence rate compared to radiation therapy for intraductal carcinoma.
- Comedo-type intraductal carcinoma is more aggressive and prone to recurrence.
- Routine axillary lymph node dissection is likely unnecessary due to low metastasis rates.