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Nuclear diameters of breast cancer cells in tissue sections
Abstract:
Nuclear diameters of breast cancer cells were measured on tissue sections in 100 cases. Processing the tissues for histology caused significant shrinkage and distortion of structures. Comparison between nuclear diameters measured on cytologic specimens and those measured on tissue sections must take into account a correction factor of 1.55 x. "Small nuclei only" were not found; in 19% of the tumors a "small nuclear type predominance" was evident. Twelve percent of the cases fell into the category of "more than 30% large nuclei" according to the cytologic criteria corrected for tissue sections. The importance of the correction factor is emphasized.
Insights
Histologic processing shrinks breast cancer cell nuclei, requiring a 1.55x correction factor for accurate diameter comparison. Most tumors showed a predominance of small nuclei, with some cases exhibiting a significant proportion of large nuclei.
Area of Science:
- Oncology
- Pathology
- Cytology
Background:
- Accurate measurement of nuclear diameters in breast cancer is crucial for diagnosis and prognosis.
- Histological processing of tissue samples can lead to significant cellular shrinkage and structural distortion.
- Comparing nuclear morphology between cytologic and histologic specimens requires careful consideration of processing artifacts.
Purpose of the Study:
- To quantify nuclear diameter changes in breast cancer cells due to histological processing.
- To determine a correction factor for comparing nuclear diameters between cytologic and tissue sections.
- To evaluate the prevalence of different nuclear size categories in breast cancer.
Main Methods:
- Nuclear diameters of breast cancer cells were measured on histological tissue sections from 100 cases.
- The study analyzed the degree of shrinkage and distortion caused by histological processing.
- A correction factor was derived for comparing nuclear diameters between cytologic and tissue specimens.
Main Results:
- Histological processing resulted in significant shrinkage and distortion of cell nuclei.
- A correction factor of 1.55x was established for comparing nuclear diameters.
- "Small nuclei only" was not observed; however, 19% of tumors showed a "small nuclear type predominance".
- Twelve percent of cases met the criteria for "more than 30% large nuclei" after applying the correction factor.
Conclusions:
- A correction factor of 1.55x is essential for accurate comparison of nuclear diameters between cytologic and tissue sections in breast cancer.
- Histological artifacts significantly impact nuclear size measurements, necessitating adjustments for reliable diagnostic interpretation.
- Understanding nuclear size distribution, adjusted for processing artifacts, aids in classifying breast cancer subtypes.