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  • Title: Phyllodes tumors of the breast: a review of 32 cases.
    Author: Geisler DP, Boyle MJ, Malnar KF, McGee JM, Nolen MC, Fortner SM, Broughan TA.
    Journal: Am Surg; 2000 Apr; 66(4):360-6. PubMed ID: 10776873.
    Abstract:
    Most general surgeons involved in breast cancer care have limited experience with phyllodes tumors. We analyzed a comprehensive database incorporating 8567 breast cancer cases treated surgically in the Tulsa, Oklahoma, region between 1969 and 1993. This yielded 32 cases of phyllodes tumors (0.37%) in 31 patients. The median age was 57 years (range, 18-91). There were 9 low-grade (28%), 2 intermediate-grade (6%), and 21 high-grade (66%) lesions. Size distribution consisted of 23 (72%) lesions 5 cm or less and 9 (28%) greater than 5 cm (mean, 3; range, 1.2-17.5 cm). Of 137 resected nodes in 13 patients, none were positive for metastatic disease. Surgical management consisted of wide excision or mastectomy. No patients received adjuvant chemoradiation therapy. The disease-free, locoregional disease-free, and overall mean survival rates were 80, 81, and 97 months, respectively. Ten-year disease-free survival (DFS), locoregional disease-free survival (LRDFS), and overall survival (OS) rates were 66, 72, and 55 per cent, respectively. Although there was a tendency toward a higher rate of locoregional recurrences and metastases with high-grade lesions, this was not statistically significant and did not affect DFS, LRDFS, or OS rates. Similarly, size of lesion did not affect DFS, LRDFS, or OS rates. Three patients (9.6%) had metastatic disease at presentation, and a further two (6.4%) developed metastases during follow-up. Overall, nine (28.1%) recurrences developed in eight patients, seven locoregional and two distant. Four patients (12.9%) died with evidence of disease. These findings indicate prolonged survival in this patient population with cystosarcoma phyllodes. Wide local excision of primary and recurrent lesions remains the mainstay of therapy. Neither regional lymph node dissection nor adjuvant chemoradiation adds significant benefit.
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