Abstract
Background: In India, less than 5% of women get routine screening for breast cancer due to lack of awareness and the absence of a coordinated national breast cancer screening programme. A community health initiative was launched by Niramai in collaboration with City Health officials in Bangalore as a pilot to increase awareness and make breast health screening available to all. Free breast cancer screening using AI powered Thermalytix test is being offered to all the underprivileged women walking into Bruhat Bengaluru Mahanagara Palike (BBMP) government hospitals from November 14, 2017 till today (after a break for 15 months during COVID). Materials and methods: This observational study was conducted in 22 BBMP-affiliated primary health centers where outpatient women over the age of 18 years and not pregnant were enrolled. The procedure included a briefing on camp procedures, taking patient consent, identification of eligible candidates, general health education, and conducting the Thermalytix test by a healthcare worker who was trained to use the Thermalytix software tool. Women were triaged using the output generated by Thermalytix 180. Those triaged as red were referred for further detailed imaging investigation in a district hospital using mammography, ultrasound and FNAC/biopsy. Results: A total of 6935 women underwent Thermalytix screening in 22 BBMP hospitals during Nov 2017 to July 2022. A total of 1687 participants were excluded from the analysis as they did not meet the eligibility criteria. The median age of the 5248 eligible participants was 42 years (range 18–86). Among them, 90 women (1.71%) had previously noticed a lump in their breast, 431 women (8.12%) had breast pain, 16 women had complained of nipple discharge, and 5 women had noticed skin discoloration. When screened, 62 (1.2%) women were detected with abnormalities and triaged positive by Thermalytix. Among them 11 women have so far gone through diagnostic investigations, of which 8 were radiologically positive and were recommended for histopathology correlation. The overall test positivity rate of Thermalytix in this cohort was 1.2% and positive predictive value with radiological positivity as reference was found to be 9/11 = 81.81%. Furhter histological analysis reported 1 DCIS and 8 benign fibroadenoma. The tests were conducted in screening camps and the average cost of conducting the test in the field came to around 6.5 USD per person. Conclusions: Thermalytix could be a potential automated screening tool for population-level screening in resource constrained settings. The portable equipment enabled easy movement across different PHCs. Since it is a privacy-aware test, there was less refusal to participate in the test. Community mobilization with the help of the local government health officials was crucial to ensure walk-ins. Conflict of interest: Ownership: yes Board of Directors: yes Corporate-sponsored Research: yes
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