Digital Breast Tomosynthesis Changes Management in Patients Seen at a Tertiary Care Breast Center

Table 1

(a) Patient demographics. (b) Patient demographics by exam type.

(a)

Number of patients	𝑛=996
Age
(i) Mean	53.1
(ii) Range	25–87
Breast density
(i) Fatty	84/996 (8.4%)
(ii) Scattered	387/996 (38.9%)
(iii) Heterogeneously dense	454/996 (45.6%)
(iiii) Extremely dense	71/996 (7.1%)
Risk factors
Personal history of breast cancer	207/996 (20.8%)
(i) Unilateral breast cancer	198/207 (95.7%)
(ii) Bilateral breast cancer	9/207 (4.3%)
(iii) Breast conserving therapy	142/207 (68.6%)
(iiii)Mastectomy*	68/207 (32.9%)
*3/6 bilateral breast
cancer patients had both
BCT and mastectomy
BRCA positivity	11/996 (1.1%)
ADH	11/996 (1.1%)
LCIS	9/996 (0.9%)
Nonspecified benign biopsy	368/996 (36.9%)
Family history of breast cancer	324/996 (32.5%)
(i) First degree	183/324 (56.5%)
(ii) Second degree	191/324 (59.0%)
(iii) Both	49/324 (15.1%)
(iiii) Not reported	4/996 (1.2%)

∗3/9 bilateral breast cancer patients had a unilateral mastectomy and contralateral breast conserving therapy.

(b)

Number of patients	𝑛=996
Screening exam	𝑛 = 711 (71.4%)
(i) Unremarkable breast history	330/711 (46.4%)
(ii) Personal h/o breast cancer	188/711 (26.4%)
(iii) High risk	185/711 (26.1%)
(iiii) Distant h/o breast intervention	8/711 (1.1%)
Diagnostic exam	𝑛 = 285 (28.6%)
(i) Symptoms	167/285 (58.6%)
(ii) Recalled for additional imaging	97/285 (34.0%)
(iii) Short term followup	21/285 (7.4%)