TABLE 1.

Overview of the Magnetic Resonance Imaging Database of Benign Lesions and Luminal A Cancers

Type of Lesion	Number of Lesions	Number of Unique Cases	Mean Age of Subjects (y)*	Age of Subjects (Minimum, Maximum) (y)
Benign	212	166	49.5±11.8	(25, 78)
Luminal A	296	296	58.0±12.5	(28, 85)

^*For some subjects, only the decade of age was available (eg, “40s” or “60s”) as part of the patient information deidentification process. In these situations, the middle of the decade was used for the calculation of the mean subject age. For example, if a subject’s age was given as 40s, the subject’s age was entered as “45” for the calculation. For the benign lesions, the age of 5 subjects was adjusted, whereas for the luminal A lesions, the age of 19 subjects was adjusted in this way. Subject age was not available for 47 benign lesions. In the situation of the same subject being imaged at multiple time points, the patient’s age at the time of imaging was used to calculate the age of the subjects for the group of lesions.