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  • Title: Fine needle aspiration biopsy of the breast. Value of nuclear morphometry after different sampling methods.
    Author: Elzagheid A, Collan Y.
    Journal: Anal Quant Cytol Histol; 2003 Apr; 25(2):73-80. PubMed ID: 12746975.
    Abstract:
    OBJECTIVE: To study the potential of nuclear morphometry in supporting the interpretation of fine needle aspiration biopsy (FNAB) samples of the breast fixed in 50% ethanol and centrifuged on slides. STUDY DESIGN: Computerized morphometry was used to outline the nuclei of breast epithelial cells in breast cancer, fibroadenoma and fibrocystic disease. The diagnoses were histologically confirmed. We applied 2 different sampling methods (measurements done on cell groups and on free cells). RESULTS: The mean nuclear area of cell groups of malignant samples (23) varied from 42 to 125 microns 2, in fibroadenomas from 30 to 50 microns 2 and in fibrocystic disease from 26 to 57 microns 2. The mean nuclear area of free cells varied as follows: cancer, 66-181 microns 2; fibroadenoma, 33-70 microns 2; fibrocystic disease, 35-60 microns 2. Apocrine metaplasia was excluded from comparison on a morphologic basis. CONCLUSION: The study suggests that if the mean nuclear area of cell groups is < 42 microns 2, the lesion is probably benign; if > 57 microns 2, and apocrine metaplasia is excluded, malignancy should be considered. The differential diagnosis between carcinoma and fibroadenoma could be based on free cells: mean area of free cell nuclei < or = 65 microns 2 suggested a benign lesion, and of > or = 71 microns 2 suggested a malignant lesion. Morphometric nuclear size features (exemplified by nuclear area) appeared efficient in distinguishing between malignant and benign lesions when measured from free cells and cell groups.
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