scholarly journals Multiple Primary Cancer and Survival after Lumpectomy with or without Radiotherapy for Ductal Carcinoma in Situ: A Propensity- Score-Matching Study

2021 ◽  
Author(s):  
Yitong Li ◽  
Dengjie Ouyang ◽  
Qitong Chen ◽  
Tao Hong ◽  
Wenjun Yi
Keyword(s):  
Propensity Score ◽  
Ductal Carcinoma In Situ ◽  
Carcinoma In Situ ◽  
Ductal Carcinoma ◽  
Second Primary ◽  
Multiple Primary Cancer ◽  
Primary Cancer ◽  
Receptor Status ◽  
Multiple Primary

Abstract Background: Radiotherapy combined with breast-conserving surgery is widely performed in patients with ductal carcinoma in situ (DCIS). This research was conducted to evaluate the use of radiotherapy to reduce the risk of multiple primary cancer (MPC) and mortality in DCIS patients.Methods: 108,416 patients first diagnosed with DCIS between 1998 and 2015 who received lumpectomy in the Surveillance, Epidemiology, and End Results (SEER) 18 database were included. Age, race, year of diagnosis, laterality, pathologic grade, surgery, radiation, estrogen receptor status, progesterone receptor status, tumor size and vital status were extracted. A comparison of lumpectomy vs. lumpectomy plus radiotherapy was performed using 1:1 propensity score-based matching.Results: Of the 108,416 patients, 39,039 patients were treated with lumpectomy alone, and 69,377 were treated with lumpectomy and radiotherapy. The adjusted hazard ratio (HR) for death was 0.801 and 0.7444 for occurrence of MPC in the lumpectomy and radiotherapy vs. lumpectomy alone groups, respectively. Conclusion: Lumpectomy plus radiotherapy is associated with a significant reduction in mortality and risk of MPC, mainly second primary BC. Younger patients, Black women with high-grade tumors were likely to benefit most. Radiotherapy reduced the risk of occurrence rather than the mortality of MPC patients to reduce the overall mortality.

scholarly journals Multiple Primary Cancer and Survival After Lumpectomy with or without Radiotherapy for Ductal Carcinoma in Situ: A Propensity-Score-Matching Study

2021 ◽  
Author(s):  
Yitong Li ◽  
Dengjie Ouyang ◽  
Qitong Chen ◽  
Tao Hong ◽  
Wenjun Yi
Keyword(s):  
Propensity Score ◽  
Ductal Carcinoma In Situ ◽  
Carcinoma In Situ ◽  
Ductal Carcinoma ◽  
Second Primary ◽  
Multiple Primary Cancer ◽  
Primary Cancer ◽  
Receptor Status ◽  
Multiple Primary

Abstract Background: Radiotherapy combined with breast-conserving surgery is widely performed in patients with ductal carcinoma in situ (DCIS). This research was conducted to evaluate the use of radiotherapy to reduce the risk of multiple primary cancer (MPC) and mortality in DCIS patients. Methods: 108,416 patients first diagnosed with DCIS between 1998 and 2015 who received lumpectomy in the Surveillance, Epidemiology, and End Results (SEER) 18 database were included. Age, race, year of diagnosis, laterality, pathologic grade, surgery, radiation, estrogen receptor status, progesterone receptor status, tumor size and vital status were extracted. A comparison of lumpectomy vs. lumpectomy plus radiotherapy was performed using 1:1 propensity score-based matching. Results: Of the 108,416 patients, 39,039 patients were treated with lumpectomy alone, and 69,377 were treated with lumpectomy and radiotherapy. The adjusted hazard ratio (HR) for death was 0.801 and 0.7444 for occurrence of MPC in the lumpectomy and radiotherapy vs. lumpectomy alone groups, respectively. Conclusion: Lumpectomy plus radiotherapy is associated with a significant reduction in mortality and risk of MPC, mainly second primary BC. Younger patients, Black women with high-grade tumors were likely to benefit most. Radiotherapy reduced the risk of occurrence rather than the mortality of MPC patients to reduce the overall mortality.

scholarly journals Study of Estrogen Receptor and Progesterone Receptor Expression in Breast Ductal Carcinoma In Situ by Immunohistochemical Staining in ER/PgR-Negative Invasive Breast Cancer

ISRN Oncology ◽  
2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Andrei Dobrescu ◽  
Monique Chang ◽  
Vatsala Kirtani ◽  
George K. Turi ◽  
Randa Hennawy ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Ductal Carcinoma In Situ ◽  
Invasive Breast Cancer ◽  
Carcinoma In Situ ◽  
Ductal Carcinoma ◽  
Receptor Expression ◽  
Invasive Cancer ◽  
Positive Staining ◽  
Receptor Status

Background. To our knowledge, the hormone receptor status of noncontiguous ductal carcinoma in situ (DCIS) occurring concurrently in ER/PgR-negative invasive cancer has not been studied. The current study was undertaken to investigate the ER/PgR receptor status of DCIS of the breast in patients with ER/PgR-negative invasive breast cancer. Methods. We reviewed the immunohistochemical (IHC) staining for ER and PgR of 187 consecutive cases of ER/PgR-negative invasive breast cancers, collected from 1995 to 2002. To meet the criteria for the study, we evaluated ER/PgR expression of DCIS cancer outside of the invasive breast cancer. Results. A total of 37 cases of DCIS meeting the above criteria were identified. Of these, 16 cases (43.2%) showed positive staining for ER, PgR, or both. Conclusions. In our study of ER/PgR-negative invasive breast cancer we found that in 8% of cases noncontiguous ER/PR-positive DCIS was present. In light of this finding, it may be important for pathologists to evaluate the ER/PgR status of DCIS occurring in the presence of ER/PgR-negative invasive cancer, as this subgroup could be considered for chemoprevention.

scholarly journals Adjuvant Tamoxifen Reduces Subsequent Breast Cancer in Women With Estrogen Receptor–Positive Ductal Carcinoma in Situ: A Study Based on NSABP Protocol B-24

2012 ◽  
Vol 30 (12) ◽  
pp. 1268-1273 ◽  
Author(s):  
D. Craig Allred ◽  
Stewart J. Anderson ◽  
Soonmyung Paik ◽  
D. Lawrence Wickerham ◽  
Iris D. Nagtegaal ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Ductal Carcinoma In Situ ◽  
Carcinoma In Situ ◽  
Ductal Carcinoma ◽  
Significant Benefit ◽  
Adjuvant Tamoxifen ◽  
Receptor Status ◽  
Er Positive

Purpose The NSABP (National Surgical Adjuvant Breast and Bowel Project) B-24 study demonstrated significant benefit with adjuvant tamoxifen in patients with ductal carcinoma in situ (DCIS) after lumpectomy and radiation. Patients were enrolled without knowledge of hormone receptor status. The current study retrospectively evaluated the relationship between receptors and response to tamoxifen. Patients and Methods Estrogen (ER) and progesterone receptors (PgR) were evaluated in 732 patients with DCIS (41% of original study population). An experienced central laboratory determined receptor status in all patient cases with available paraffin blocks (n = 449) by immunohistochemistry (IHC) using comprehensively validated assays. Results for additional patients (n = 283) determined by various methods (primarily IHC) were available from enrolling institutions. Combined results were evaluated for benefit of tamoxifen by receptor status at 10 years and overall follow-up (median, 14.5 years). Results ER was positive in 76% of patients. Patients with ER-positive DCIS treated with tamoxifen (v placebo) showed significant decreases in subsequent breast cancer at 10 years (hazard ratio [HR], 0.49; P < .001) and overall follow-up (HR, 0.60; P = .003), which remained significant in multivariable analysis (overall HR, 0.64; P = .003). Results were similar, but less significant, when subsequent ipsilateral and contralateral, invasive and noninvasive, breast cancers were considered separately. No significant benefit was observed in ER-negative DCIS. PgR and either receptor were positive in 66% and 79% of patients, respectively, and in general, neither was more predictive than ER alone. Conclusion Patients in NSABP B-24 with ER-positive DCIS receiving adjuvant tamoxifen after standard therapy showed significant reductions in subsequent breast cancer. The use of adjuvant tamoxifen should be considered for patients with DCIS.

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