Yong Hwa Eom

BCL2 as a Subtype-Specific Prognostic Marker for Breast Cancer

Purpose B-cell lymphoma 2 (BCL2) is an antiapoptosis protein and an important clinical breast cancer prognostic marker. As the role of BCL2 is dependent on the estrogen receptor (ER) status, this effect might differ according to molecular subtypes. The aim of this study was to evaluate the relationship between the prognostic outcomes and BCL2 expression among the molecular subtypes. Methods We retrieved the data of 1,356 patients who were newly diagnosed with malignant breast cancer between November 2006 and November 2011. Immunohistochemistry was used to measure ER, progesterone receptor, human epidermal growth factor receptor 2 (HER2), Ki-67, and BCL2 expression. We classified breast cancer into five molecular subtypes based on the 13th St. Gallen International Expert Consensus, including luminal A, luminal B (HER2-negative), luminal B (HER2-positive), HER2-overexpression, and triple-negative subtypes. We analyzed the clinicopathological features and assessed the correlation between BCL2 expression and clinical outcomes, such as relapse-free survival (RFS) and disease-specific survival (DSS) according to the five molecular subtypes. Results A total of 605 cases of breast cancer (53.8%) showed BCL2 expression. BCL2-positive expression was associated with young age (<50 years, p=0.036), lower histological grade (p<0.001), low Ki-67 level (<14%, p<0.001), hormone receptor positivity (p<0.001), HER2 negativity (p<0.001), luminal breast cancer (p<0.001), and low recurrence rate (p=0.016). BCL2-positive expression was also associated with favorable 5-year RFS (p=0.008, 91.4%) and DSS (p=0.036, 95.6%) in all the patients. BCL2-positive expression in luminal A breast cancer resulted in significantly favorable 5-year RFS and DSS (p=0.023 and p=0.041, respectively). However, BCL2 expression was not associated with the prognosis in the other subtypes. Conclusion The prognostic role of BCL2 expression in breast cancer is subtype-specific. BCL2 expression differs according to the molecular subtype and is a good prognostic marker for only luminal A breast cancer.

Is adjuvant chemotherapy omissible in women with T1-2 stage, node-positive, luminal A type breast cancer?

Abstract Purpose: The aim of this study was to evaluate whether hormonal breast cancer therapy without systemic chemotherapy is feasible in adjuvant settings in luminal A breast cancer. Methods: A database of 879 patients who underwent breast cancer surgery enrolled between January 2003 and December 2011 was reviewed. Patients with luminal A cancers were selected and grouped into those who received adjuvant hormonal therapy with (group C+) or without (group C − ) adjuvant systemic therapy. Results: In a multivariable analysis, axillary lymph node (ALN) metastasis was the only independent factor that revealed significantly different between the two groups in disease-free survival (DFS). The 5-year cumulative DFS was 82.3 versus 76.2% (P = 0.700) and overall survival (OS) was 83.9 versus 100% (P = 0.483) for C+ versus C −  breast cancer, respectively. Conclusion: In our study, adjuvant chemotherapy in luminal A, T1-2N+ cancer showed no significant difference for DFS. We believe that the role of adjuvant chemotherapy for these women with hormonal therapy might have little benefit.

A one-day surgical-skill training course for medical students’ improved surgical skills and increased interest in surgery as a career

BackgroundDespite many high-quality programs in basic surgical-skill education, the surgical skill of junior doctors varies widely. This, together with the waning interest in surgery as a career among medical students, is a serious issue confronted by hospitals and healthcare systems worldwide. We, therefore, developed and implemented an intensive one-day surgical-skill training course for two purposes; it would improve surgical skills and increase interest in surgery among medical students.MethodsThe surgical-skill training program is named Surgical Skill Weekend (SSW) and it includes hands-on training sessions for surgical-suturing techniques and advanced surgical procedures (i.e. laparoscopic and robot-assisted surgery), hybrid simulation sessions, and an operating-room session where aforementioned sessions are all put together. By the end of the program, students’ improvements in surgical-suturing skills were assessed by experts in a form of checklist, and changes in the interest in a surgical career, if there were any, were answered by the students who participated in the program.ResultsA total of ninety-one (91) medical students participated in the 2015 and 2016 SSW courses. Their overall satisfaction level with the course was very high (Very satisfied: 78%, Quite satisfied: 22%). All of the participant’s surgical-suturing skills significantly improved (median score range: 14–20, P < 0.05) and their interest in a surgical career increased significantly (from 56% to 81%, P < 0.05) by completing the program.ConclusionsAn intensive and comprehensive surgical-skill training program for medical students can not only improve surgical-suturing skills but also increase interest in surgery as a career.

The distance between breast cancer and the skin is associated with axillary nodal metastasis.

More superficially located tumors may be more likely than deeper tumors to metastasize to the axillary nodes via the lymphatics. The aim of this study was to determine whether breast cancer distance from the skin affects axillary node metastasis, ipsilateral breast cancer recurrence, or recurrence‐free survival.

Present Condition Analysis of Physician Assistant in Korea

This study intended to identify the need for the legalization and development of a systematic program for physician assistants (PAs) by understanding the actual state of PA operation in hospitals. In 114 hospitals assigned as resident training hospitals for surgery, a survey was conducted on the personnel working as PAs in those hospitals; the survey included general personal information, working conditions, training time, and satisfaction. A total of 192 PAs in surgery at 35 hospitals responded to the survey. The types of PAs are Surgical Assistant, Clinical Physician Assistant, Wound Ostomy Care Nurse, Coordinator, and Clinical Research Coordinator. Types of work PAs preformed are surgical assistance, wound dressing, educating patients, overlooking consultation, doing paper works, writing operation records, and confirming examination results which were ordered. The satisfaction level for the position which PAs hold were 29.1% and and satisfaction level which doctors see towards PA was 15%. The role and the job descriptions of PAs are not clear cut, there are many discrepancies among hospitals we studied. As a result, legalization and the implementation of standardized role of PAs will lead to increase level of satisfactions in the work force and the quality of work which PAs perform will be greater.

Sparganosis of the Unilateral Breast: A Case Report

Sparganosis is a parasitic infection caused by the sparganum, the plercercoid of the genus Spirometra. The preoperative diagnosis of breast sparganosis is difficult in most cases because it is a rare parasitic infection less than 2% of all cases. We report a 62-year-old woman case of breast sparganosis that were confirmed by surgical removal of worms from the right breast. The radiologic images of the patient also revealed characteristic features of breast sparganosis. The patient described the migrating palpable breast mass, which strongly suggested the possibility of breast sparganosis. The treatment of choice and confirmative diagnosis for sparganosis are complete surgical extraction of the sparganum irrespective of infected site. Inspection of the mass site with detailed medical history and radiological examinations are important for preoperative diagnosis of sparganosis patients.

Improved Model for Predicting Axillary Response to Neoadjuvant Chemotherapy in Patients with Clinically Node-Positive Breast Cancer

Purpose Pathological complete response (pCR) of axillary lymph node (LN) is frequently achieved in patients with clinically node-positive breast cancer after neoadjuvant chemotherapy (NAC). Treatment of the axilla after NAC is not well established and the value of sentinel LN biopsy following NAC remains unclear. This study investigated the predictive value of axillary response following NAC and evaluated the predictive value of a model based on axillary response. Methods Data prospectively collected on 201 patients with clinically node-positive breast cancer who were treated with NAC and underwent axillary LN dissection (ALND) were retrieved. A model predictive of axillary pCR was developed based on clinicopathologic variables. The overall predictive ability between models was compared by receiver operating characteristic (ROC) curve analysis. Results Of 201 patients who underwent ALND after NAC, 68 (33.8%) achieved axillary pCR. Multivariate analysis using axillary LN pCR after NAC as the dependent variable showed that higher histologic grade (p=0.031; odds ratio [OR], 2.537; 95% confidence interval [CI], 1.087–5.925) and tumor response rate ≥47.1% (p=0.001; OR, 3.212; 95% CI, 1.584–6.515) were significantly associated with an increased probability of achieving axillary pCR. The area under the ROC curve for estimating axillary pCR was significantly higher in the model that included tumor response rate than in the model that excluded this rate (0.732 vs. 0.649, p=0.022). Conclusion Tumor response rate was the most significant independent predictor of axillary pCR in response to NAC. The model that included tumor response rate was a significantly better predictor of axillary pCR than the model that excluded tumor response rate.