Right coroner artery assessment in radiotherapy of breast cancer

WOS: 000467786303104The risk of developing coronary ischemic heart disease and the radiation doses to heart and left anterior descending coronary artery (LAD) have been very well documented in breast cancer patients who underwent radiotherapy (RT). On the other hand, there is limited information regarding the right coronary artery (RCA) doses which feeds the heart in 48% of the human population. In this study proximal RCA (pRCA) doses are evaluated in the treatment plans of breast cancer patients who underwent RT

The satisfaction of patients with breast cancer undergone immediate reconstruction with implant and the effect of radiotherapy

WOS: 000431715800005PubMed ID: 29692660Aim of the study: Postmastectomy reconstructive surgery for cosmetic satisfaction of patients is rapidly increasing. Postoperative complications such as infection, capsular contracture, implant loss are more common in patients who receive adjuvant radiotherapy (RT) than those who do not. Satisfaction levels in patients is still a controversial issue. Therefore, we wanted to investigate our patient population for the effects of RT and planned a study evaluating the satisfaction rates of our patients who received implants. Material and methods: Seventy five breast cancer patients who went through mastectomy and went through reconstruction using expanders or silicone implants were surveyed. Complication and cosmetic satisfaction rates were separately compared between irradiated and nonirradiated implants. Responses of 46 patients who answered the survey were analyzed using chi(2) test and Mann Whitney U test. p < 0.05 was considered statistically significant. Results: Thirty-one of the patients received adjuvant RT and 15 did not receive RT (NRT). There was no difference between the RT and NRT groups in the terms of touch, size, shape of silicones, pain and satisfaction level in look of clothing. Only satisfaction in symmetry was significantly lower in the RT group than in the NRT group (p = 0.02). Additionally, patients receiving chemotherapy were less satisfied with silicone size than those who did not (p = 0.02). Conclusion: We did not find negative effects, other than symmetry, of adjuvant radiotherapy in breast cancer patients who underwent reconstructive surgery in terms of cosmetic satisfaction

Aromatase inhibitors decrease radiation-induced lung fibrosis: Results of an experimental study

IEEE Conference on Standards for Communications and Networking, CSCN 2015 -- 28 October 2015 through 30 October 2015 -- 119154Purpose: In experimental and clinical trials, tamoxifen (TAM) has been shown to increase radiation-induced lung fibrosis (RILF). Furthermore, aromatase inhibitors (AI) have been shown to be superior to TAM in the adjuvant setting and preclinical data suggest that letrozole (LET) sensitizes breast cancer cells to ionizing radiation in other studies. In this experimental study, we evaluated whether AI have any impact on the development of RILF in rats. Materials and methods: 60 female wistar- albino rats were divided into 6 groups: Control (group A), RT alone (group B), RT + TAM (group C), RT + anastrozole (ANA group D), RT + LET (group E), and RT + exemestane (EXE, group F). RT consisted of 30 Gy in 10 fractions to both lungs with an anterior field at 2 cm depth. Equivalent doses for 60 kg adult dose per day of TAM, ANA, LET, and EXE were calculated according to the mean weight of rats and orally administrated with a feeding tube. Percentage of lung with fibrosis was quantified with image analysis of histological sections of the lung. The mean score values were calculated for each group. the significance of the differences among groups were calculated using one way ANOVA test and Tukey HSD post-hoc test. Results: Mean values of fibrosis were 1.7, 5.9, 6.7, 2.5, 2 and 2.2 for groups A, B, C, D, E, and F, respectively (p = 0.000). TAM increased RT-induced lung fibrosis but without statistical significance. Groups treated with RT + AI showed significantly less lung fibrosis than groups treated with RT alone or RT + TAM (p = 0.000). RT + AI groups showed nearly similar RT-induced lung fibrosis than control group. Conclusions: In this study, we found that AI decreased RT-induced lung fibrosis to the control group level suggesting protective effect

Dosimetric evaluation of right coronary artery in radiotherapy for breast cancer

Comparison with control groups of untreated patients suggests that right-breast-cancer patients who receive radiotherapy have a higher rate of heart disease. Dose constraint for heart has been established to minimize radiotherapy-induced cardiotoxicity during left breast cancer treatment. Additionally, it is suggested to minimize the dosage on left anterior descending (LAD) artery. Right coronary artery (RCA), is the second largest artery, after left main coronary artery, supplying the heart. A dose evaluation study is not present for RCA; the proximal part of which is included in the irradiation field during breast cancer treatment of right breast. To investigate the presence of a correlation, doses resulting from right and left breast radiotherapy on proximal RCA (pRCA), LAD, and heart are evaluated in this study. Forty breast cancer patients who went under breast-conserving surgery are the subject of this study. Four groups were established; right breast, right breast and internal mammary (IM), left breast and left breast, and IM. pRCA, LAD, and heart volumes were contoured for each group on the planning tomographies. Resultant doses of tangential fields planning on these volumes were compared using dose-volume histograms. Mean and maximum doses of pRCA were statistically compared between groups. The highest mean and maximum point doses (192 to 284 cGy) were found in the right breast + IM group (p <0.05). The mean and maximum doses only in the right breast and left breast + IM group did not differ statistically. However, the mean and maximum pRCA doses in these 2 groups were higher than only the left breast group (p<0.05). pRCA receives high doses during radiotherapy of right and left breast especially if IM is included. This may predispose to coronary artery disease

Nüks Rektum Kanserinde İntraoperatif Radyoterapi

Giriş: Lokal ileri ve nüks rektum kanserinde multimodal tedavi seçeneklerden biri olan intraoperatif radyoterapi (İORT), lokal kontrolü sağlamak için tercih edilebilir. Bu çalışmada nüks rektum kanseri nedeniyle radikal cerrahi ve intraoperatif radyoterapi uyguladığımız hastalar üzerindeki deneyimimizi sunmayı amaçladık. Metod: Acıbadem Mehmet Ali Aydınlar Üniversitesi Tıp Fakültesi, Maslak Hastanesi’nde Kasım 2012 ve Aralık 2016 tarihleri arasında nüks rektum kanseri nedeniyle radikal cerrahi ve İORT uygulanan hastaların klinik özellikleri ve ameliyat sonrası takipleri değerlendirildi. Bulgular: Çalışmamıza nüks rektum kanseri olan 8 hasta (4 kadın) dahil edildi. Tüm hastalarda nüks adenokarsinom mevcuttu. Hastaların ortanca yaş değeri 54.5 (33-67) ve vücut kitle indeksi 24.3 (19.6-32.5) kg/m2 idi. Rektum kanseri için yapılan ilk ameliyatların tümü sfinkter koruyucu rezeksiyondu. Nüks tümör nedeniyle 4 hastaya aşağı anterior rezeksiyon, 2 hastaya abdominoperineal rezeksiyon, 2 hastaya da pelvisten kitle çıkarılması işlemi uygulandı. 5 hastaya R0, 2 hastaya R1 ve 1 hastaya R2 rezeksiyon yapıldı. Ameliyat sonrası erken dönem takiplerinde 2 hastada cerrahi yara enfeksiyonu gelişti. Ortanca hastanede kalış süresi 8 (4-10) gündü. Ortanca 35.5 (7-52) aylık takip süresince 4 hasta hastalıksız takip edilmektedir. İki hastada pelvik nüks gelişti. İki hasta eksitus oldu. Sonuç: Nüks rektum kanserinde intraoperatif radyoterapi, toksisite riskini azaltarak yüksek doz radyoterapi uygulayabilmemize olanak sağlayan ve bu yolla cerrahinin lokal kontrol üzerindeki etkinliğini artıran bir yöntemdir

Male Breast Cancer: 37-Year Data Study at a Single Experience Center in Turkey

PURPOSE: The aim of this study is to evaluate the effects of prognostic factors on the overall survival (OS) and locoregional control (LC) among male breast cancer (MBC) patients treated at Cerrahpasa Medical School Hospital, along with a review of the related literature. METHODS: The data of 86 patients treated for MBC from 1973 to 2010 are retrospectively reviewed. Patient demographics and clinical information, including the date of diagnosis, treatment, clinical course, and the date and causes of death are routinely recorded. RESULTS: Median follow-up was 66 months. Isolated local-regional recurrence and distant metastases were observed in 15 (17.4%) and 24 (34.1%) of the cases, respectively. The 5-year OS rate was 65.8%; the disease-free survival rate was 72.4%, and the LC rate was 89.7%. The prognostic factors influencing local relapse were the T stage (p=0.002) and the chest wall muscular invasion (p=0.027) in the univariate analysis. The prognostic factors influencing OS were the presence of a positive axillary lymph node (p=0.001) and the T stage (p=0.001) in the univariate analysis. The T stage (p=0.008) and node (N) stage (p=0.038) were significant prognostic factors for OS in the multivariate analyses. Also, the T stage (p=0.034) was found to be significant for LC. CONCLUSION: We found that only the tumor size and lymph node status were independent prognostic factors for survival. In addition, only the tumor size was an independent prognostic factor for locoregional relapse. Modified radical mastectomy and conservative surgical procedures had similar outcomes for LC