Breast Cancer Histopathology and Biology
Author Information
Author(s): Webster L R, Bilous A M, Willis L, Byth K, Burgemeister F C, Salisbury E L C, Clarke C L, Balleine R L
Primary Institution: Translational Oncology Westmead and Nepean Hospitals
Hypothesis
The study aims to distinguish the impact of biology on breast cancer histopathology by comparing features of breast cancers diagnosed following population mammographic screening.
Conclusion
The study found that biology and time both impact the size and lymph node status of invasive breast cancer, while grade reflects biology alone.
Supporting Evidence
- Prevalent invasive cancers were larger and more likely to be lymph node positive than incident cases.
- Histopathologic grade was not related to diagnostic screening round or screening interval.
- Larger tumor size was positively correlated with the presence of lymph node metastases.
Takeaway
This study looked at how breast cancer features change over time and found that the size of the cancer can grow as time passes, but the grade of the cancer is more about its biology.
Methodology
The study analyzed central histopathology review data from 1147 cases of ductal in situ and/or invasive breast cancer diagnosed through mammographic screening.
Potential Biases
Potential bias may arise from the selection of cases based on screening methods and the inherent limitations of histopathological grading.
Limitations
The study may be limited by interobserver variability in histopathologic assessment and the absence of a universally accepted method for grading DCIS.
Participant Demographics
The cohort consisted of women diagnosed with breast cancer through mammographic screening, with ages ranging from 40.1 to 92.6 years.
Statistical Information
P-Value
P<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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