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The Korean Journal of Cytopathology 1999;10(1): 21-26.
The Significance of Nuclear Size in Nuclear Grade of Invasive Ductal Carcinoma of the Breast.
Young Kyung Bae, Dong Sug Kim, Hye Jung Choi, Mi Jin Gu, Soo Jung Lee, Jea Young Lee
Department of Pathology and General Surgery, Yeungnam University College of Medicine.
ABSTRACT
To make the objective standard of nuclear size in grading nuclear pleomorphism of invasive ductal carcinoma of the breast, we measured maximal nuclear diameter of tumor cells on imprint cytology slides and histologic sections from 65 cases by using computer-based image analysis system(Optimas 6.0). The maximal diameter of red blood cells were also measured to evaluate the ratio of maximal nuclear diameter of tumor cells to maximal diameter of red blood cells. The mean values of maximal nuclear diameter of tumor cells on imprint cytology slides and histologic sections were 7.56 micrometer, 7.53 micrometer in nuclear grade 1, 8.92+/-0.98 micrometer, 9.02+/-0.74 micrometer in nuclear grade 2, and 12.90+/-1.47 micrometer, 12.44+/-1.41 micrometer in nuclear grade 3, respectively. There were no significant differences between values of imprint cytology and histologic section. The ratio of maximal nuclear diameter of tumor cells to maximal diameter of red blood cells were 1.3-1.4:1 in nuclear grade 1, 1.6-1.7:1 in nuclear grade 2, and 2.2-2.3:1 in nuclear grade 3. These values would be guidelines for grading nuclear pleomorphism of invasive ductal carcinoma of the breast on routine surgical pathology work.
Key Words: Breast; Invasive ductal carcinoma; Imprint cytology; Nuclear size; Morphometric study