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1.
Journal of Breast Cancer ; : 353-362, 2023.
Article in English | WPRIM | ID: wpr-1000776

ABSTRACT

Purpose@#Several predictive models have been developed to predict the pathological complete response (pCR) after neoadjuvant chemotherapy (NAC); however, few are broadly applicable owing to radiologic complexity and institution-specific clinical variables, and none have been externally validated. This study aimed to develop and externally validate a machine learning model that predicts pCR after NAC in patients with breast cancer using routinely collected clinical and demographic variables. @*Methods@#The electronic medical records of patients with advanced breast cancer who underwent NAC before surgical resection between January 2017 and December 2020 were reviewed. Patient data from Seoul National University Bundang Hospital were divided into training and internal validation cohorts. Five machine learning techniques, including gradient boosting machine (GBM), support vector machine, random forest, decision tree, and neural network, were used to build predictive models, and the area under the receiver operating characteristic curve (AUC) was compared to select the best model. Finally, the model was validated using an independent cohort from Seoul National University Hospital. @*Results@#A total of 1,003 patients were included in the study: 287, 71, and 645 in the training, internal validation, and external validation cohorts, respectively. Overall, 36.3% of the patients achieved pCR. Among the five machine learning models, the GBM showed the highest AUC for pCR prediction (AUC, 0.903; 95% confidence interval [CI], 0.833–0.972).External validation confirmed an AUC of 0.833 (95% CI, 0.800–0.865). @*Conclusion@#Commonly available clinical and demographic variables were used to develop a machine learning model for predicting pCR following NAC. External validation of the model demonstrated good discrimination power, indicating that routinely collected variables were sufficient to build a good prediction model.

2.
Korean Journal of Radiology ; : 866-877, 2022.
Article in English | WPRIM | ID: wpr-938777

ABSTRACT

Objective@#The optimal imaging approach for evaluating pathological nipple discharge remains unclear. We investigated the value of adding ductography to ultrasound (US) for evaluating pathologic nipple discharge in patients with negative mammography findings. @*Materials and Methods@#From July 2003 to December 2018, 101 women (mean age, 46.3 ± 12.2 years; range, 23–75 years) with pathologic nipple discharge were evaluated using pre-ductography (initial) US, ductography, and post-ductography US. The imaging findings were reviewed retrospectively. The standard reference was surgery (70 patients) or > 2 years of followup with US (31 patients). The diagnostic performances of initial US, ductography, and post-ductography US for detecting malignancy were compared using the McNemar’s test or a generalized estimating equation. @*Results@#In total, 47 papillomas, 30 other benign lesions, seven high-risk lesions, and 17 malignant lesions were identified as underlying causes of pathologic nipple discharge. Only eight of the 17 malignancies were detected on the initial US, while the remaining nine malignancies were detected by ductography. Among the nine malignancies detected by ductography, eight were detected on post-ductography US and could be localized for US-guided intervention. The sensitivities of ductography (94.1% [16/17]) and post-ductography US (94.1% [16/17]) were significantly higher than those of initial US (47.1% [8/17]; p = 0.027 and 0.013, respectively). The negative predictive value of post-ductography US (96.9% [31/32]) was significantly higher than that of the initial US (83.3% [45/54]; p = 0.006). Specificity was significantly higher for initial US than for ductography and post-ductography US (p = 0.001 for all). @*Conclusion@#The combined use of ductography and US has a high sensitivity for detecting malignancy in patients with pathologic nipple discharge and negative mammography. Ductography findings enable lesion localization on second-look post-ductography US, thus facilitating the selection of optimal treatment plans.

3.
Journal of Breast Cancer ; : 13-24, 2022.
Article in English | WPRIM | ID: wpr-925172

ABSTRACT

Purpose@#Breast cancer is mainly diagnosed using core needle biopsy (CNB), although other biopsy methods, including vacuum-assisted biopsy (VAB), may also be used. We compared differences in clinical characteristics and prognoses of patients with breast cancer according to biopsy methods used for diagnosis. @*Methods@#A total of 98,457 patients who underwent various biopsy methods (CNB, fine-needle aspiration [FNA], VAB, and excisional biopsy) for diagnosing breast cancer were recruited. Using CNB as a reference, related clinicopathological factors and prognostic differences between biopsy methods were analyzed retrospectively using large-scale data from the Korean Breast Cancer Society Registration System. The associations between biopsy methods and clinicopathological factors were compared using multinomial logistic regression analysis, and the prognoses of patients undergoing the different biopsy methods, as breast cancer-specific survival (BCSS) and overall survival (OS), were compared using the Kaplan-Meier method and Cox proportional hazard model. @*Results@#Univariate and multivariate analyses showed that unlike FNA, both VAB and excisional biopsy were significantly associated with tumor size, palpability, tumor stage, and histologic grade as relatively good prognostic factors compared to CNB. In particular, VAB showed lower odds ratios for these factors than excisional biopsy. In the univariate analysis, the prognosis of patients undergoing VAB was better than that of those undergoing CNB with respect to BCSS (hazard ratio [HR], 0.188, p < 0.001) and OS (HR, 0.359; p < 0.001). However, in the multivariate analysis, there were no significant prognostic differences from CNB in both BCSS and OS; differences were only evident for FNA. @*Conclusion@#In this study, we showed that the characteristics of breast cancer differed according to various biopsy methods. Although VAB is not a standard method for breast cancer diagnosis, it showed no prognostic differences to CNB.

4.
Ultrasonography ; : 520-529, 2021.
Article in English | WPRIM | ID: wpr-919545

ABSTRACT

Purpose@#This study aimed to predict a heavy nodal burden (≥3 metastatic axillary lymph nodes [LNs]) using axillary ultrasonography (US) and US-guided fine-needle aspiration biopsy (FNAB) in patients with early-stage breast cancer. @*Methods@#We retrospectively reviewed the medical records of 403 women (404 cancers) who underwent US-guided FNAB for axillary LN staging from January 2006 to December 2015. US findings and US-guided FNAB results were reviewed and compared using pathology results as the reference. Diagnostic performance was analyzed, and clinicopathological and radiological findings were compared between patients with <3 metastatic LNs and ≥3 metastatic LNs. @*Results@#The final pathology results revealed that 20.5% of cancers had heavy nodal metastases. US-guided FNAB showed significantly higher sensitivity (79.0% vs. 63.0%, P=0.009) and specificity (84.8% vs. 79.3%, P=0.036) in predicting heavy nodal metastases than did US. The presence of a larger number of suspicious LNs (two or more) on axillary US and positive FNAB results were significantly correlated with a heavy nodal burden in the multivariate analysis. The odds ratios were 4.20 (95% confidence interval [CI], 1.90 to 9.39) for two suspicious LNs, 9.40 (95% CI, 2.99 to 29.54) for three or more suspicious LNs, and 14.22 (95% CI, 6.78 to 29.82) for positive FNAB results. @*Conclusion@#The number of suspicious LNs detected on axillary US and FNAB results can help predict a heavy axillary nodal burden in patients with early-stage breast cancer.

5.
Korean Journal of Neurotrauma ; : 61-66, 2021.
Article in English | WPRIM | ID: wpr-918015

ABSTRACT

Ipsilateral hemiparesis is a rare and challenging sign in clinical neurological practice.Although the etiology of this manifestation is poorly understood, recent studies have attempted to probe the pathomechanism of this sign with advanced radiological techniques.Additional knowledge about the lesion and unraveling the pathomechanisms causing neurological impairments are important to predict the prognosis and clinical course and to aid in rehabilitation. Therefore, we present a case of a patient with a traumatic subdural hematoma on the left hemisphere and left spastic hemiparesis. Using diffusion tensor imaging (DTI), we concluded that the right corticospinal tract injury caused by compression of the cerebral peduncle accounted for the ipsilateral hemiparesis, also known as Kernohan's notch phenomenon. Thus, this case report highlights the usefulness of the newer radiological techniques, such as DTI, to identify the pathomechanisms of neurological presentations.

6.
Journal of Breast Cancer ; : 647-655, 2020.
Article in English | WPRIM | ID: wpr-898959

ABSTRACT

Purpose@#BRCA1/2 mutations are associated with risks of breast and ovarian cancer. In Korea, incidences of BRCA1/2 genetic testing and risk-reducing surgery (RRS) have increased with insurance coverage and the Angelina Jolie effect. The aim of this study was to identify trends in RRS performed in Korean women with the BRCA1/2 mutation. @*Methods@#We retrospectively reviewed the medical records of BRCA1/2 mutation carriers with (affected carriers) and without (unaffected carriers) breast cancer until August 2018 from 25 Korean Hereditary Breast Cancer (KOHBRA)-affiliated hospitals. @*Results@#The numbers of contralateral risk-reducing mastectomy (RRM) and risk-reducing bilateral salpingo-oophorectomy (RRBSO) in affected carriers have increased 5.8- and 3.6-fold, respectively, since 2013. The numbers of RRBSO in unaffected carriers has increased 8-fold since 2013. The number of institutions that perform RRS has increased gradually. The number of hospitals that perform contralateral RRM on affected carriers increased from 3 in 2012 to 11 in 2018, and that of those that perform RRBSO increased from 7 to 17. The number of hospitals that perform bilateral RRM on unaffected carriers increased from 1 in 2012 to 2 in 2018, and that of those that perform RRBSO increased from 1 to 8. However, the hospitals showed differences in the rates of RRM or RRBSO performed. @*Conclusion@#The incidence of RRS increased each year throughout the study period. However, in Korea, the rate of RRS procedures depended on the hospital.

7.
Journal of Breast Cancer ; : 647-655, 2020.
Article in English | WPRIM | ID: wpr-891255

ABSTRACT

Purpose@#BRCA1/2 mutations are associated with risks of breast and ovarian cancer. In Korea, incidences of BRCA1/2 genetic testing and risk-reducing surgery (RRS) have increased with insurance coverage and the Angelina Jolie effect. The aim of this study was to identify trends in RRS performed in Korean women with the BRCA1/2 mutation. @*Methods@#We retrospectively reviewed the medical records of BRCA1/2 mutation carriers with (affected carriers) and without (unaffected carriers) breast cancer until August 2018 from 25 Korean Hereditary Breast Cancer (KOHBRA)-affiliated hospitals. @*Results@#The numbers of contralateral risk-reducing mastectomy (RRM) and risk-reducing bilateral salpingo-oophorectomy (RRBSO) in affected carriers have increased 5.8- and 3.6-fold, respectively, since 2013. The numbers of RRBSO in unaffected carriers has increased 8-fold since 2013. The number of institutions that perform RRS has increased gradually. The number of hospitals that perform contralateral RRM on affected carriers increased from 3 in 2012 to 11 in 2018, and that of those that perform RRBSO increased from 7 to 17. The number of hospitals that perform bilateral RRM on unaffected carriers increased from 1 in 2012 to 2 in 2018, and that of those that perform RRBSO increased from 1 to 8. However, the hospitals showed differences in the rates of RRM or RRBSO performed. @*Conclusion@#The incidence of RRS increased each year throughout the study period. However, in Korea, the rate of RRS procedures depended on the hospital.

8.
Journal of Breast Disease ; (2): 25-36, 2020.
Article | WPRIM | ID: wpr-835616

ABSTRACT

Purpose@#Although the number of elderly patients with breast cancer is increasing as the population ages, their treatment is controversial. We evaluated the prognostic factors associated with survival in elderly breast cancer patients and assessed the impact of comorbidity on prognosis. @*Methods@#This study included 362 patients (aged ≥65 years) who underwent surgery for breast cancer in our institution between 2003 and 2014. The patients were divided into early-aged (65–74 years) and late-aged (≥75 years) groups. Comorbidity was parametrized using the Charlson comorbidity index (CCI). Kaplan–Meier analysis was used to analyze overall survival (OS) and distant metastasis-free survival (DMFS). Prognostic factors were evaluated by Cox proportional hazards regression. @*Results@#The surgical method, subtypes, stage, and oncological features were similar between early- and late-aged groups; however, smaller proportions of patients in the late-aged group received chemotherapy (12.9% vs. 45.5%) and endocrine therapy (55.3% vs. 73.3%). In multivariable analysis, the poor prognostic factors associated with DMFS and OS were high CCI, high histologic grade, and advanced stage. Chemotherapy, endocrine therapy, and radiotherapy were not significantly related to DMFS and OS. @*Conclusion@#In this study, adjuvant treatments did not affect the prognosis of elderly patients with breast cancer. To clarify the effects of adjuvant therapies in these patients, a large-scale retrospective study that considers not only tumor characteristics but also life expectancy is necessary.

10.
Journal of Breast Cancer ; : 439-452, 2019.
Article in English | WPRIM | ID: wpr-764278

ABSTRACT

PURPOSE: There is cumulative evidence that changes in biomarker status occur frequently during the metastatic progression of breast cancer and affect treatment response. The purpose of this study was to evaluate the frequency of biomarker changes in metastatic breast cancer (MBC) and its impact on prognosis. METHODS: A total of 152 patients diagnosed with MBC at the time of initial diagnosis or during post-surgical follow-up were included. Changes in biomarker status in MBCs, their frequency according to various metastatic sites, tumor characteristics, and their association with patient survival were analyzed. RESULTS: Estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2), and Ki-67 status changed in 9 (6.0%), 40 (26.3%), 12 (7.9%), and 29 (19.1%) patients, respectively. ER, PR, and HER2 mainly showed positive to negative conversion, whereas Ki-67 changed mostly from a low to high index. There were no differences in the frequencies of biomarker changes according to the metastatic sites. As for ER and HER2, cases with negative conversion showed low expression levels in the primary tumor. Survival analyses indicated that a positive to negative conversion of ER was an independent poor prognostic factor in patients with primary ER-positive breast cancer. CONCLUSION: Changes in biomarker status are not rare, and usually occur in an unfavorable direction in breast cancer metastases. Negative conversion of ER status is a predictor of poor prognosis. Thus, it is beneficial to evaluate changes in biomarker status in MBC not only for the purpose of determining treatment options but also for prognostication of patients.


Subject(s)
Humans , Biomarkers , Breast Neoplasms , Breast , Diagnosis , Estrogens , Follow-Up Studies , Neoplasm Metastasis , Prognosis , ErbB Receptors , Receptors, Progesterone
11.
Annals of Surgical Treatment and Research ; : 209-215, 2019.
Article in English | WPRIM | ID: wpr-739592

ABSTRACT

PURPOSE: To evaluate superiority of a night float (NF) system in comparison to a traditional night on-call (NO) system for surgical residents at a single institution in terms of efficacy, safety, and satisfaction. METHODS: A NF system was implemented from March to September 2017 and big data analysis from electronic medical records was performed for all patients admitted for surgery or contacted from the emergency room (ER). Parameters including vital signs, mortality, and morbidity rates, as well as promptness of response to ER calls, were compared against a comparable period (March to September 2016) during which a NO system was in effect. A survey was also performed for physicians and nurses who had experienced both systems. RESULTS: A total of 150,000 clinical data were analyzed. Under the NO and NF systems, a total of 3,900 and 3,726 patients were admitted for surgery. Mortality rates were similar but postoperative bleeding was significantly higher in the NO system (0.5% vs. 0.2%, P = 0.031). From the 1,462 and 1,354 patients under the NO and NF systems respectively, that required surgical consultation from the ER, the time to response was significantly shorter in the NF system (54.5 ± 70.7 minutes vs. 66.8 ± 83.8 minutes, P < 0.001). Both physicians (90.4%) and nurses (91.4%) agreed that the NF system was more beneficial. CONCLUSION: This is the first report of a NF system using big data analysis in Korea, and potential benefits of this new system were observed in both ward and ER patient management.


Subject(s)
Humans , Electronic Health Records , Emergency Service, Hospital , Hemorrhage , Internship and Residency , Korea , Medical Staff , Mortality , Statistics as Topic , Vital Signs
12.
Cancer Research and Treatment ; : 1140-1148, 2018.
Article in English | WPRIM | ID: wpr-717753

ABSTRACT

PURPOSE: This study aimed to identify predictors for distant metastatic behavior and build a related prognostic nomogram in breast cancer. MATERIALS AND METHODS: A total of 1,181 patients with non-metastatic breast cancer between 2003 and 2011 were analyzed. To predict the probability of distant metastasis, a nomogram was constructed based on prognostic factors identified using a Cox proportional hazards model. RESULTS: The 7-year overall survival and 5-year post-progression survival of locoregional versus distant recurrence groups were 67.6% versus 39.1% (p=0.027) and 54.2% versus 33.5% (p=0.043), respectively. Patients who developed distant metastasis showed early and late mortality risk peaks within 3 and after 5 years of follow-up, respectively, but a broad and low risk increment was observed in other patients with locoregional relapse. In multivariate analysis of distant metastasis-free interval, age (≥ 45 years vs. < 45 years), molecular subtypes (luminal A vs. luminal B, human epidermal growth receptor 2, and triple negative), T category (T1 vs. T2-3 and T4), and N category (N0 vs. N1 and N2-3) were independently associated (p < 0.05 for all). Regarding the significant factors, a well-validated nomogram was established (concordance index, 0.812). The risk score level of patients with initial brain failure was higher than those of non-brain sites (p=0.029). CONCLUSION: The nomogram could be useful for predicting the individual probability of distant recurrence in breast cancer. In high-risk patients based on the risk scores, more aggressive systemic therapy and closer surveillance for metastatic failure should be considered.


Subject(s)
Humans , Brain , Breast Neoplasms , Breast , Follow-Up Studies , Mortality , Multivariate Analysis , Neoplasm Metastasis , Nomograms , Phenobarbital , Prognosis , Proportional Hazards Models , Radiotherapy, Adjuvant , Recurrence
13.
Cancer Research and Treatment ; : 1418-1432, 2018.
Article in English | WPRIM | ID: wpr-717512

ABSTRACT

PURPOSE: Alteration of biomarker status after primary systemic therapy (PST) is occasionally found in breast cancer. This study was conducted to clarify the clinical implications of change of biomarker status in breast cancer patients treated with PST. MATERIALS AND METHODS: The pre-chemotherapeutic biopsy and post-chemotherapeutic resection specimens of 442 breast cancer patients who had residual disease after PST were included in this study. The association between changes of biomarker status after PST and clinicopathologic features of tumors, and survival of the patients, were analyzed. RESULTS: Estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2) status changed after PST in 18 (4.1%), 80 (18.1%), and 15 (3.4%) patients,respectively. ER and PR mainly underwent positive to negative conversion,whereas HER2 status underwent negative to positive conversion. Negative conversion of ER and PR status after PST was associated with reduced disease-free survival. Moreover, a decline in the Allred score for PR in post-PST specimens was significantly associated with poor clinical outcome of the patients. HER2 change did not have prognostic significance. In multivariate analyses, negative PR status after PST was found to be an independent adverse prognostic factor in the whole patient group, in the adjuvant endocrine therapy-treated subgroup, and also in pre-PST PR positive subgroup. CONCLUSION: ER and HER2 status changed little after PST, whereas PR status changed significantly. In particular, negative conversion of PR status was revealed as a poor prognostic indicator, suggesting that re-evaluation of basic biomarkers is mandatory in breast cancer after PST for proper management and prognostication of patients.


Subject(s)
Humans , Biomarkers , Biopsy , Breast Neoplasms , Breast , Disease-Free Survival , Estrogens , Multivariate Analysis , Neoadjuvant Therapy , Progesterone , Prognosis , ErbB Receptors , Receptors, Progesterone
14.
Journal of Breast Cancer ; : 80-86, 2018.
Article in English | WPRIM | ID: wpr-713694

ABSTRACT

PURPOSE: The management of benign intraductal papilloma (IDP) without atypia diagnosed on core needle biopsy (CNB) remains controversial. This study was performed to evaluate the rate of upgrading to malignancy or high-risk lesions after excision and to identify factors associated with upgrading using a large series of benign IDP cases without atypia. METHODS: We included patients who were diagnosed as having benign IDP without atypia on CNB and underwent surgical or vacuum-assisted excision between 2010 and 2015. We analyzed the clinical, radiologic, and histopathologic features of IDPs that were upgraded to malignancy or high-risk lesions after excision. RESULTS: A total of 511 benign IDPs without atypia diagnosed via CNB were identified, of which 398 cases were treated with excision. After reviewing these cases, four cases of high-risk lesions in adjacent tissue on CNB, two cases which were revealed as papilloma with atypia, and nine cases of malignancy in the same breast were excluded. In the remaining 383 cases, the rate of upgrading to malignancy and high-risk lesions after excision was 0.8% and 4.4%, respectively. The presence of concurrent contralateral breast cancer, the presence of symptoms, and multifocality were factors significantly associated with upgrading to malignancy on subsequent excision. Surgical excision rather than vacuum-assisted excision was significantly associated with upgrading to high-risk lesions or malignancy. CONCLUSION: The rate of upgrading to malignancy for benign IDP without atypia was very low, suggesting that close clinical and radiologic observation may be sufficient for patients with benign IDP without atypia on CNB under proper settings.


Subject(s)
Humans , Biopsy, Large-Core Needle , Breast , Breast Neoplasms , Papilloma , Papilloma, Intraductal
15.
Journal of Breast Cancer ; : 197-205, 2018.
Article in English | WPRIM | ID: wpr-714860

ABSTRACT

PURPOSE: Although microinvasive carcinoma is distinct from ductal carcinoma in situ (DCIS), the clinical significance of microinvasion in DCIS remains elusive. The purpose of this study is to evaluate the clinicopathological features and clinical outcomes of microinvasive carcinoma compared with pure DCIS. METHODS: We assessed 613 cases of DCIS and microinvasive carcinoma that were consecutively resected from 2003 to 2014 and analyzed clinicopathological variables, expression of standard biomarkers such as the estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2), p53, and Ki-67, and tumor recurrence. RESULTS: Among the 613 cases, 136 (22.2%) were classified as microinvasive carcinoma. Microinvasive carcinoma was significantly associated with DCIS with a large extent, high nuclear grade, necrosis, and comedotype architectural pattern. ER and PR expressions were dominantly observed in pure DCIS, whereas positive HER2 status, p53 overexpression, and high Ki-67 proliferation indices were more frequently observed in microinvasive carcinoma. Lymph node metastasis was found in only four cases of microinvasive carcinoma with multifocal microinvasion. In the multivariate analysis, DCIS with a large extent, comedo-type architectural pattern, and negative ER status were found to be independent predictors of microinvasion. During follow-up, 12 patients had ipsilateral breast recurrence, and no differences in recurrence rates were observed between patients with DCIS and those with microinvasive carcinoma. The triple-negative subtype was the only factor that was associated with tumor recurrence. CONCLUSION: Microinvasive carcinomas are distinct from DCIS in terms of clinicopathological features and biomarker expressions but are similar to DCIS in terms of clinical outcomes. Our results suggest that microinvasive carcinoma can be treated and followed up as pure DCIS.


Subject(s)
Humans , Biomarkers , Breast , Breast Neoplasms , Carcinoma, Ductal , Carcinoma, Intraductal, Noninfiltrating , Estrogens , Follow-Up Studies , Lymph Nodes , Multivariate Analysis , Necrosis , Neoplasm Metastasis , ErbB Receptors , Receptors, Progesterone , Recurrence , Triple Negative Breast Neoplasms
16.
Journal of Breast Cancer ; : 203-207, 2017.
Article in English | WPRIM | ID: wpr-207527

ABSTRACT

Lack of awareness, the stigma of carrying a genetic mutation, and economic factors are barriers to acceptance of BRCA genetic testing or appropriate risk management. We aimed to investigate the influence of Angelina Jolie's announcement of her medical experience and also health insurance reimbursement for BRCA gene testing on practice patterns for hereditary breast and ovarian cancer (HBOC). A survey regarding changes in practice patterns for HBOC before and after the announcement was conducted online. The rate of BRCA gene testing was obtained from the National Health Insurance Review and Assessment Service database. From May to August 2016, 70 physicians responded to the survey. Genetic testing recommendations and prophylactic management were increased after the announcement. Risk-reducing salpingo-oophorectomy and contralateral prophylactic mastectomy was significantly increased in BRCA carriers with breast cancer. The BRCA testing rate increased annually. Health insurance and a celebrity announcement were associated with increased genetic testing.


Subject(s)
Breast Neoplasms , Breast , Genetic Testing , Insurance Coverage , Insurance , Insurance, Health , Insurance, Health, Reimbursement , Mastectomy , National Health Programs , Ovarian Neoplasms , Risk Management
17.
Journal of Breast Cancer ; : 400-403, 2017.
Article in English | WPRIM | ID: wpr-194952

ABSTRACT

Two consecutive surveys for breast surgeons in Korea were conducted to comprehend the practice patterns and perceptions on margin status after breast-conserving surgery. The surveys were conducted online in 2014 (initial) and 2016 (follow-up). A total of 126 and 88 responses were obtained in the initial and follow-up survey, respectively. More than 80% of the respondents replied to routinely apply frozen section biopsy for intraoperative margin assessment in both surveys. Re-excision recommendations of the margin for invasive cancer significantly changed from a close margin to a positive margin over time (p=0.033). Most of the respondents (73.8%) defined a negative margin as “no ink on tumor” in invasive cancer, whereas more diverse responses were observed in ductal carcinoma in situ cases. The influence of guideline establishment for negative margins has been identified. A high uptake rate of intraoperative frozen section biopsy was noted and routine use needs reconsideration.


Subject(s)
Biopsy , Breast , Carcinoma, Intraductal, Noninfiltrating , Follow-Up Studies , Frozen Sections , Ink , Korea , Mastectomy, Segmental , Surgeons , Surveys and Questionnaires
18.
Journal of Breast Cancer ; : 65-73, 2017.
Article in English | WPRIM | ID: wpr-148355

ABSTRACT

PURPOSE: Considering the distinctive biology of triple-negative breast cancer (TNBC), this study aimed to identify TNBC-specific prognostic factors and determine the prognostic value of the Nottingham Prognostic Index (NPI) and its variant indices. METHODS: A total of 233 patients with newly diagnosed stage I to III TNBC from 2003 to 2012 were reviewed. We retrospectively analyzed the patients' demographics, clinicopathologic parameters, treatment, and survival outcomes. The NPI was calculated as follows: tumor size (cm)×0.2+node status+Scarff-Bloom-Richardson (SBR) grade. The modified NPI (MNPI) was obtained by adding the modified SBR grade rather than the SBR grade. RESULTS: The median follow-up was 67.8 months. Five-year disease-free survival (DFS) and overall survival (OS) were 81.4% and 89.9%, respectively. Multivariate analyses showed that the MNPI was the most significant and common prognostic factor of DFS (p=0.001) and OS (p=0.019). Young age (≤35 years) was also correlated with poor DFS (p=0.006). A recursive partitioning for establishing the prognostic model for DFS was performed based on the results of multivariate analysis. Patients with a low MNPI (≤6.5) were stratified into the low-risk group (p6.5) were subdivided into the intermediate (>35 years) and high-risk (≤35 years) groups. Age was not a prognostic factor in patients with a low MNPI, whereas in patients with a high MNPI, it was the second key factor in subdividing patients according to prognosis (p=0.023). CONCLUSION: The MNPI could be used to stratify patients with stage I to III TNBC according to prognosis. It was the most important prognosticator for both DFS and OS. The prognostic significance of young age for DFS differed by MNPI.


Subject(s)
Humans , Age Factors , Biology , Demography , Disease-Free Survival , Follow-Up Studies , Multivariate Analysis , Prognosis , Retrospective Studies , Triple Negative Breast Neoplasms
19.
Journal of Breast Cancer ; : 279-285, 2017.
Article in English | WPRIM | ID: wpr-83453

ABSTRACT

PURPOSE: Germline mutations in the BRCA1 and BRCA2 genes confer increased risks for breast cancers. However, the clinical presentation of breast cancer among women who are carriers of the BRCA1 or BRCA2 (BRCA1/2 carriers) mutations is heterogenous. We aimed to identify the effects of the reproductive histories of women with the BRCA1/2 mutations on the clinical presentation of breast cancer. METHODS: We retrospectively analyzed clinical data on women with proven BRCA1 and BRCA2 mutations who were recruited to the Korean Hereditary Breast Cancer study, from 2007 to 2014. RESULTS: Among the 736 women who were BRCA1/2 mutation carriers, a total of 483 women had breast cancers. Breast cancer diagnosis occurred at significantly younger ages in women who experienced menarche at ≤14 years of age, compared to those who experienced menarche at >14 years of age (37.38±7.60 and 43.30±10.11, respectively, p<0.001). Additionally, the number of full-term pregnancies was significantly associated with the age of diagnosis, especially in women with the BRCA2 mutation. The prevalence of advanced stages (stage II or III vs. stage I) of disease in parous women was higher than in nulliparous women (68.5% vs. 55.2%, p=0.043). This association was more pronounced in women with the BRCA2 mutation (hazard ratio, 2.67; p=0.014). CONCLUSION: Our results suggest that reproductive factors, such as the age of onset of menarche and the presence of parity, are associated with the clinical presentation patterns of breast cancer in BRCA1/2 mutation carriers.


Subject(s)
Female , Humans , Pregnancy , Age of Onset , Breast Neoplasms , Breast , Diagnosis , Genes, BRCA1 , Genes, BRCA2 , Germ-Line Mutation , Menarche , Parity , Prevalence , Reproductive History , Retrospective Studies
20.
Journal of Breast Disease ; (2): 8-15, 2017.
Article in English | WPRIM | ID: wpr-645297

ABSTRACT

PURPOSE: The aims of this study were to evaluate the magnitude of distress after breast cancer diagnosis and to investigate factors associated with distress, as well as to determine the effectiveness of psychological intervention. METHODS: This study was performed retrospectively, reviewing 264 patients who underwent breast cancer surgery at Seoul National University Bundang Hospital between November 2011 and May 2014. Distress was measured using the distress thermometer (DT) and Center for Epidemiological Studies-Depression scale (CES-D) questionnaires before, as well as at 3 and 6 months postsurgery. Psychological intervention was recommended to high risk patients (DT score ≥5 or CES-D score ≥16). RESULTS: In total, 149 patients (56.4%) were classified as high risk in the initial assessment. In the following assessments, the proportion of those in the high risk group was 38.5% and 25.0% at 3 and 6 months postsurgery, respectively. Mastectomy was significantly associated with high levels of distress compared to breast-conserving surgery in the univariate (p=0.048) and multivariate analyses (p=0.014). However, there was no significant relationship between any of the various socioeconomic factors and distress. Distress level was reduced over time in both scales. Of the 149 high risk patients, only 21 received the psychological intervention. Using linear mixed models, the psychological intervention resulted in marginally significant reductions in DT (p=0.051) and CES-D (p=0.077) scores. CONCLUSION: More than half of patients experienced distress upon initial diagnosis, and the determined surgery type was an important factor associated with high distress level. It is important to identify high risk patients and to manage distress during the initial phase.


Subject(s)
Humans , Breast Neoplasms , Breast , Diagnosis , Mass Screening , Mastectomy , Mastectomy, Segmental , Multivariate Analysis , Retrospective Studies , Seoul , Socioeconomic Factors , Thermometers , Weights and Measures
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