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Table 1 Clinical characteristics of MPTB patients diagnosed in 2000–2020 from the SEER database

From: Effect of adjuvant radiotherapy on overall survival and breast cancer-specific survival of patients with malignant phyllodes tumor of the breast in different age groups: a retrospective observational study based on SEER

Characteristics

18–45

46–55

56–65

66–80

P value

N

729

769

489

274

 

Year

0.614

 2000–2009

347 (47.6%)

381 (49.5%)

225 (46%)

127 (46.4%)

 

 2010–2020

382 (52.4%)

388 (50.5%)

264 (54%)

147 (53.6%)

 

Race

 < 0.001

 White

483 (66.3%)

546 (71%)

366 (74.8%)

220 (80.3%)

 

 Black

98 (13.4%)

82 (10.7%)

42 (8.6%)

21 (7.7%)

 

 Other

148 (20.3%)

141 (18.3%)

81 (16.6%)

33 (12%)

 

Tumor grade

 < 0.001

 Unknown

301 (41.3%)

164 (21.3%)

131 (26.8%)

45 (16.4%)

 

 I–II

267 (36.6%)

379 (49.3%)

232 (47.4%)

151 (55.1%)

 

 III–IV

161 (22.1%)

226 (29.4%)

126 (25.8%)

78 (28.5%)

 

Laterality

0.322

 Left

346 (47.5%)

385 (50.1%)

253 (51.7%)

126 (46%)

 

 Right

383 (52.5%)

384 (49.9%)

236 (48.3%)

148 (54%)

 

AJCC.T

0.591

 Unknown

123 (16.9%)

107 (13.9%)

70 (14.3%)

44 (16.1%)

 

 T1–T2

342 (46.9%)

357 (46.4%)

227 (46.4%)

133 (48.5%)

 

 T3–T4

264 (36.2%)

305 (39.7%)

192 (39.3%)

97 (35.4%)

 

AJCC.N

 < 0.001

 Unknown

100 (13.7%)

46 (6%)

25 (5.1%)

11 (4%)

 

 Negative

604 (82.9%)

717 (93.2%)

453 (92.6%)

257 (93.8%)

 

 Positive

25 (3.4%)

6 (0.8%)

11 (2.2%)

6 (2.2%)

 

AJCC.M

0.979

 Unknown

101 (13.9%)

110 (14.3%)

69 (14.1%)

44 (16.1%)

 

 Negative

616 (84.5%)

645 (83.9%)

413 (84.5%)

225 (82.1%)

 

 Positive

12 (1.6%)

14 (1.8%)

7 (1.4%)

5 (1.8%)

 

Surgery of primary site

0.323

 Breast-conserving surgery

404 (55.4%)

408 (53.1%)

259 (53%)

134 (48.9%)

 

 Mastectomy

325 (44.6%)

361 (46.9%)

230 (47%)

140 (51.1%)

 

Radiotherapy

0.020

 No

597 (81.9%)

617 (80.2%)

367 (75.1%)

225 (82.1%)

 

 Yes

132 (18.1%)

152 (19.8%)

122 (24.9%)

49 (17.9%)

 

Chemotherapy

0.675

 No

695 (95.3%)

735 (95.6%)

468 (95.7%)

266 (97.1%)

 

 Yes

34 (4.7%)

34 (4.4%)

21 (4.3%)

8 (2.9%)

 

Marital status

 < 0.001

 Unknown

56 (7.7%)

47 (6.1%)

30 (6.1%)

11 (4%)

 

 Married

372 (51%)

450 (58.5%)

273 (55.8%)

126 (46%)

 

 Not married

301 (41.3%)

272 (35.4%)

186 (38%)

137 (50%)

 

Local lymphatic biopsy

0.009

 Yes

149 (20.4%)

194 (25.2%)

130 (26.6%)

81 (29.6%)

 

 No

580 (79.6%)

575 (74.8%)

359 (73.4%)

193 (70.4%)

 
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