Table 2:

Imaging characteristics including modality that resulted in BIRADS 3, lesion location and lesion morphology, and follow-up.

Characteristic	Value (%)
Modality
Mammogram & Ultrasound	590/1,037 (56.9%)
Mammogram alone	404/1,037 (39.0%)
Ultrasound alone	41/1,037 (3.95%)
Laterality
Left	462/1,037 (44.6%)
Right	516/1,037 (49.8%)
Both	59/1,037 (5.7%)
Morphology
Asymmetry/ Architectural Distortion	512/1,037 (49%)
Grouped calcifications	398/1,037 (38%)
Noncalcified circumscribed mass	90/1,037 (9%)
Other	37/1,037 (4%)
Follow-up rates *
At 6 months	1,007/1,037 (97.1%)
At 12 months	979/1,022 (95.8%)
At 18-24 months	876/1,011 (86.7%)

^*Denominator adjusted for benign pathology from biopsy at prior follow-up.