Table 2 Patient demographic data in relation to breast cancer laterality (n = 223)
From: Is laterality in breast Cancer still worth studying? Local experience in Bahrain
Right-sided Breast n (%) | Left-sided Breast n (%) | P. value | |
|---|---|---|---|
Age at diagnosis | |||
< 50 | 60 (55.6) | 58 (50.4) | 0.444 |
≥ 50 | 48 (44.4) | 57 (49.6) | |
Nulliparous | |||
Yes | 27 (25.0) | 20 (17.4) | 0.164 |
No | 81 (75.0) | 95 (82.6) | |
History of breastfeeding | |||
Yes | 74 (68.5) | 86 (75.4) | 0.251 |
No | 34 (31.5) | 28 (24.6) | |
Family history of malignancy | |||
Yes | 43 (40.2) | 32 (27.8) | 0.052 |
No | 64 (59.8) | 83 (72.2) | |
Size of tumor | |||
≤ 5 cm | 88 (81.5) | 102 (88.7) | 0.129 |
> 5 cm | 20 (18.5) | 13 (11.3) | |
Summarized histopathology | |||
Invasive Ductal Carcinoma (NST) | 91 (84.3) | 84 (73.0) | 0.212 |
Invasive Ductal Carcinoma (ST) | 7 (6.5) | 11 (9.6) | |
Ductal carcinoma in situ (DCIS) | 3 (2.8) | 9 (7.8) | |
Invasive Lobular Carcinoma (NST) | 6 (5.6) | 7 (6.1) | |
Mixed Invasive Ductal & Lobular | 1 (0.9) | 4 (3.5) | |
ER/PR Hormonal Status | |||
Positive | 65 (61.9) | 68 (60.7) | 0.866 |
Negative | 35 (33.3) | 40 (35.7) | |
Not available | 5 (4.8) | 4 (3.6) | |
HER2 | |||
Positive | 33 (31.4) | 30 (27.3) | 0.494 |
Negative | 61 (58.1) | 72 (65.5) | |
Not available | 11 (10.5) | 8 (7.3) | |
Multifocal | |||
Yes | 23 (21.3) | 31 (27.4) | 0.442 |
No | 81 (75.0) | 76 (67.3) | |
Not available | 4 (3.7) | 6 (5.3) | |
Final stage: lymph node | |||
Negative | 47 (43.5) | 57 (49.6) | 0.366 |
Positive | 61 (56.5) | 58 (50.4) | |
Final stage: metastasis | |||
Mo | 93 (86.1) | 104 (90.4) | 0.315 |
M1 | 15 (13.9) | 11 (9.6) | |
Tumor Stage | |||
Early | 70 (64.8) | 93 (80.9) | 0.025 |
Locally advanced | 24 (22.2) | 13 (11.3) | |
Metastatic (M1) | 14 (13.0) | 9 (7.8) | |
Five-year survival | |||
Yes | 74 (79.6) | 84 (82.4) | 0.408 |
No | 16 (17.2) | 12 (11.8) | |
Lost follow up | 3 (3.2) | 6 (5.9) | |
Site of recurrence | |||
Local | 7 (6.9) | 5 (4.5) | 0.199 |
Distant Metastasis | 10 (9.9) | 20 (18.0) | |
No | 84 (83.2) | 86 (77.5) | |
History of malignancy | |||
Yes | 2 (1.9) | 3 (2.6) | 0.703 |
No | 105 (98.1) | 111 (97.4) | |
Malignancy type in past | |||
Breast | 0 (0) | 1 (33.3) | 0.172 |
Ovaries | 1 (50.0) | 0 (0) | |
Uterine | 0 (0) | 2 (66.7) | |
Others | 1 (50.0) | 0 (0) | |
Grade of the main tumor | |||
Grade 1 | 10 (9.8) | 10 (9.8) | 0.608 |
Grade 2 | 50 (49.0) | 47 (46.1) | |
Grade 3 | 37 (36.3) | 40 (39.2) | |
Not available | 5 (4.9) | 5 (4.9) | |
Vascular and lymphatic invasion | |||
Negative | 50 (48.1) | 46 (43.8) | 0.775 |
Positive | 52 (50.0) | 56 (53.3) | |
Not available | 2 (1.9) | 3 (2.9) | |