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Table 1 Clinical characteristics and surgical outcomes between fibroadenoma and non-fibroadenoma groups

From: Surgery for fibroadenoma arising from axillary accessory breast

  AAB with fibroadenoma
(n = 39)
AAB without fibroadenoma
(n = 2271)
P-value*
Age, years 34.3 (22–48) 33.8 (13–65) 0.687
Category    0.372
 ≤ 20 0 (0.0) 78 (3.4)  
 21–40 27 (69.2) 1694 (74.6)  
 41–60 12 (30.8) 490 (21.6)  
 > 60 0 (0.0) 9 (0.4)  
BMI, kg/m2 19.9 (15.5–24.1) 22.3 (17.2–33.7)  < 0.000
Family history of AAB    0.585
 None 37 (94.8) 2043 (89.9)  
 Mother 1 (2.6) 136 (6.0)  
 Siblings 1 (2.6) 92 (4.1)  
Symptoms    0.148
 Palpable mass 0 (0.0) 167 (7.3)  
 Pain and palpable mass 39 (100.0) 2104 (92.7)  
Onset of symptoms    0.008
 After puberty 31 (79.5) 1294 (57.0)  
 After pregnancy 8 (20.5) 977 (43.0)  
DL classification    0.288
 I 29 (74.4) 1408 (62.0)  
  A 1 230  
  B 28 1170  
 II 8 (20.5) 693 (30.5)  
  A 2 110  
  B 6 583  
 III 2 (5.1) 170 (7.5)  
  A 1 70  
  B 1 100  
Concurrent fibroadenoma excision in the chest normal breast 14 (35.9) 92 (4.1)  < 0.000
Operation time, minutes 39.4 (30–60) 39.0 (30–60) 0.905
Weight of the accessory mammary gland, g 57.4 (25–157) 59.9 (10–204) 0.641
Liposuction volume, mL 301.7 (60–600) 338.6 (60–1200) 0.759
Other tumor 0 (0.0) 5 (0.2) 1.000
 Fibrocystic disease 0 5  
 Malignancy 0 0  
Postoperative complications 1 (2.6) 54 (2.4) 0.986
 Hematoma 0 4  
 Seroma 1 20  
 Surgical site infection 0 1  
 Skin ischemia 0 6  
 Axillary numbness 0 3  
 Hypertrophic scar 0 4  
 Hyperpigmentation 0 10  
 Irregular skin contour 0 6  
Redo operation 1 (2.6) 60 (2.6) 0.919
 Redundant skin excision 0 50  
 Remnant mammary gland 0 0  
 Liposuction for irregular contour 1 6  
 Scar revision for hypertrophic scar 0 4  
Postoperative fibroadenoma growth in axilla 0 (0.0) 0 (0.0)  
Satisfaction scorea    
 Appearance 4.7 (4–5) 4.7 (4–5) 0.544
 Axillary pain 4.8 (4–5) 4.7 (4–5) 0.664
 Overall 9.4 (8–10) 9.4 (9–10) 0.687
Follow-up period 41.6 (6–75) 46.1 (6–75) 0.376
  1. Data are presented as mean (range), n (%), or n
  2. *Most P-values represent comparisons between categorical variables, which were tested using the χ2 test. Continuous variables were tested using the Wilcoxon rank-sum test and t-test
  3. aSatisfaction score was measured according to scar, pain, and cosmesis level scores 6 months postoperatively using a 5-point Likert scale
  4. AAB, axillary accessory breast; BMI, body mass index; DL classification, Damsoyu–Lee classification