Ultrasound more accurate for assisting breast cancer treatment: Study
Canada: A recent study in the American Journal of Surgery has found ultrasound to be more accurate than mammography or MRI for measuring the pathology size of breast tumors.
Accoridng to the study, ultrasound and mammogram underestimated tumors up to 20 mm, whereas ultrasound, mammogram, and MRI all overestimated tumors over 50 mm. The researchers also noted that the concordance decreases with increasing size and lobular histology.
Currently, there is a concern for overtreatment of breast cancer and rising mastectomy rates. Hannah Kapur, University of British Columbia, Vancouver, BC, Canada, and colleagues aimed to compare preoperative imaging size (PIS) to postoperative pathology sizes (PPS) with a view to identifying opportunities to de-escalate surgery.
For this purpose, the researchers identified patients having surgery from 2013-2017 for first invasive breast cancers. PIS was then compared with PPS looking at correlation and concordance. Evaluation of associated clinical features was done by regression models stratified by clinical T stage.
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