The Important Morphological Parameters Used to Differentiate Benign/Malignant Phyllodes Tumors of the Breast
| Autor: | Isin Gokcol Erdogan, Ülkü Küçük, Umit Bayol, Emel Ebru Pala |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Pathology
medicine.medical_specialty Stromal cell business.industry Phyllodes tumor Breast Neoplasms medicine.disease Tumor site Pathology and Forensic Medicine Diagnosis Differential Lymphocytic Infiltrate Phyllodes Tumor Giant cell medicine Atypia Humans Female business Hyaline Retrospective Studies Calcification |
| Zdroj: | Turkish Journal of Pathology. 28:245 |
| ISSN: | 1309-5730 1018-5615 |
| Popis: | OBJECTIVE Phyllodes tumor is a rare fibroepithelial neoplasia of the breast. Tumors are classified according to the histological criteria as benign, borderline, malignant groups. Criteria used to discriminate benign/malignant cases are stromal cytological atypia, stromal hypercellularity, mitotic rate, stromal overgrowth, and tumor margins. We designed this study retrospectively to see the validity of these criteria for our case group and investigate whether we could add any new criteria. MATERIAL AND METHOD We included 22 cases diagnosed as phyllodes tumor from our archives. Pathology records were used for age, tumor site, macroscopic size. The Hematoxylin-Eosin stained slides were reviewed according to the defined criteria. Additionally leaf like growth pattern, stromal hyalinization, calcification, stromal giant cells, stromal neutrophil leukocyte, and mononuclear lymphocytic infiltrate were recorded qualitatively (present/absent) and numerically (mild, moderate, severe). We examined the differences between benign and malignant groups with the Mann-Whitney U and chi-square tests. RESULTS The previously defined criteria were statistically significant but stromal giant cells, stromal hyalinization, calcification, stromal neutrophil and mononuclear lymphocytic infiltrate intensity were not statistically significant in determining the benign-borderline-malignant cases. CONCLUSION Stromal hypercellularity, moderate/severe stromal cytological atypia, increased mitotic rate, stromal overgrowth and infiltrative tumor margins were observed in malignant phyllodes tumors. Malignant cases were also older and tumor size was bigger than benign ones. |
| Databáze: | OpenAIRE |
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