Table 5.

Association of CLS-B with histologic impression and lobular involution

N (%) with any CLS-B
OverallKTBBBD controlsBBD cases
Histologic impression
 No histologic abnormality2/54 (3.7%)2/54 (3.7%)
 Nonproliferative disease11/79 (13.9%)1/22 (4.5%)8/34 (23.5%)2/23 (8.7%)
 Proliferative disease without atypia18/87 (20.7%)0/7 (0%)5/38 (13.2%)13/42 (31.0%)
 Proliferative disease with atypia9/36 (25.0%)0/1 (0%)3/14 (21.4%)6/21 (28.6%)
Lobular involution
 None2/36 (5.6%)1/4 (25.0%)0/12 (0%)1/20 (5%)
 Partial22/114 (19.3%)1/35 (2.9%)7/37 (18.9%)14/42 (33.3%)
 Complete14/96 (14.6%)1/44 (2.3%)9/36 (25.0%)4/16 (25.0%)