Phyllodes Tumors of the Breast: A Review of 26 Cases

Soumaya Ben Abdelkrim, Amel Trabelsi, Mouna Bouzrara, Mohamed Zaher Boudagga, Anis Memmi, Dajla Abbassi Bakir, Moncef Mokni

Abstract


Background: Phyllodes tumors of the breast are rare and locally aggressive neoplasms. Our study aimed to report the experience of the Farhat Hached Hospital (Sousse, Tunisia) acquired during a 7-year period and to give an additional review of the available literature.

Methods: The authors analyzed retrospectively clinical, radiological, histopathological and therapeutic features as well as outcome in a series of 26 cases diagnosed as phyllodes tumors of the breast at the Pathology Department of Farhat Hached Hospital, Sousse, Tunisia, from 2003 to 2009. The slides were reviewed in order to classify the tumors into benign, borderline and malignant on the basis of the criteria proposed by the World Health Organization.

Results: All the cases occurred in women. The analysis of this series showed the following characteristics: mean age at diagnosis was 40 years (19 - 66), tumor size was 1.5 - 40 cm (mean: 7.8 cm); the chief complaint was a mammary mass; the right breast was affected in 14 cases, the upper outer quadrant was the most commonly involved site (42.3%); surgical treatment was used in all cases, 21 patients (80.8%) were treated conservatively (13 benign, 6 borderline, and 2 malignant) and 5 (19.2%) by radical surgery (1 borderline and 4 malignant); seven patients underwent post-operative radiotherapy; in 14/19 cases (73.7%), a good correlation was observed between intraoperative frozen section analysis and definitive histology; the tumor was classed as benign in 13 cases (50%), borderline in 7 cases (27%) and malignant in 6 cases (23%); follow-up data was available in 22 cases; the rate of recurrence was 23% (1 benign, 3 borderline, and 2 malignant) after a mean follow-up of 13.6 months; all the recurrent tumors were initially treated by lumpectomy and were close to margin at the initial pathologic examination; the treatment of recurrences consisted of simple mastectomy in 5 cases, and local excision in one case; three patients developed metastases, one of whom after recurrence; three patients have died.

Conclusions: This is a substantial single institution experience of a rare tumor. Phyllodes tumors of the breast have an unpredictable outcome, thus a wide local excision, with an adequate margin of normal breast tissue, is the preferred initial therapy.





World J Oncol. 2010;1(3):129-134
doi: https://doi.org/10.4021/wjon2010.06.220w


Keywords


Phyllodes tumor; Pathology; Prognosis; Treatment; Outcome

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