Figure 1.

An invisible case in AI that is concordant only in radiologist’s analysis. A 53-year-old woman presented at the hospital with a palpable mass of her left breast. (A) Mammography showed a dense breast with a 3.7-cm-sized well-circumscribed oval mass in the left mediocentral breast (arrows). (B) Artificial intelligence revealed no abnormal lesion on the mammogram. The largest malignancy probability score was 0.85% of the left craniocaudal view and the abnormality score of the case was shown as ‘low’. The patient underwent ultrasound-guided core needle biopsy. She was diagnosed with invasive mucinous carcinoma.