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Last Updated Thursday March 22 2018 01:43 AM IST

Overweight women may need more frequent mammograms

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Obese Photo: Getty Images

London: Overweight women should undergo mammography screen tests more frequently than women with lower BMI, suggests a new study.

BMI or Body Mass Index is a measure of body fat based on height and weight. An overweight person has a BMI of 25 or more, while a BMI of 30 or higher is considered obese.

The research, presented at the annual meeting of Radiological Society of North America 2017, stated that women with higher BMI face an increased risk of not detecting the breast tumor until it has become large.

"When a clinician presents the pros and cons of breast cancer screening to the patient, having high BMI should be an important 'pro' argument," said Fredrik Strand, a researcher at the Karolinska University in Stockholm, Sweden.

"In addition, our findings suggest that women with high BMI should consider shorter time intervals between screenings."

The researchers studied 2,012 cases of breast cancer and looked for how disease progression was related to BMI and breast density.

Researchers identified the risk factors associated with tumors that do not get detected until larger than two centimeters, or about the size of a peanut.

The two-cm size is important because it is one of the parameters used to separate stage I and stage II cancers.

In addition, tumor size is known to be strongly associated with prognosis, a medical term used for predicting the likelihood of a person's survival.

The results found that both the BMI and the breast density were associated with having a large tumor at diagnosis. However, for interval cancers, or cancers detected within two years of a normal mammogram, only BMI was linked with having a large tumor.

Also, women with higher BMI had a worse prognosis than those with lower BMI among interval cancers.

The opinions expressed here do not reflect those of Malayala Manorama. Legal action under the IT Act will be taken against those making derogatory and obscene statements.

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