Invasive ductal carcinoma (IDC) breast cancer is one of the most common types of breast cancer among women, with a relatively high mortality rate. Introducing new diagnostic methods to the medical field can lead to a reduction in mortality. One of these methods is statistical monitoring and social screening of people with high risk of IDC cancer. Accordingly, many variables involved in the IDC occurrence should be identified and valued and finally classified. These variables include genetic factors involved in the IDC occurrence, environmental and unknown parameters. Addressing each of the factors requires extensive research. However, in this study, it has been tried to use three effective factors in the IDC occurrence, which include age, HR/HER2 status, and race, to provide a statistical model of the IDC occurrence. This information is reported based on the research of the American Cancer Society for 5 different races, aged 20 to over 79 and with different HR/HER2 status. In this study, a statistical analysis has been done based on the age, HR/HER2 status, and race. To provide a visual presentation of statistical analysis, Koch curve has been used with Python software, which is the best curve to show the progress of IDC disease. The results showed that people in the age group of 60 to 69, with HR+/HER2- status and white race are the people with higher probability of IDC. People in the age group of 20 to 39, with HR-/HER2+ status and with black race are less likely to develop IDC. In the same way, people with characteristics between these two states can be ranked.

Background: Breast conserving surgery (BCS) and its following radiotherapy is an accepted therapeutic method for patients with invasive lobular carcinoma (ILC) and invasive ductal carcinoma (IDC). Objectives: The aim of this study was to investigate the effect of intraoperative electron radiotherapy on women with breast cancer (invasive lobular and ductal carcinoma). Methods: Between August 2013 and September 2017, 968 patients, who were referred to Cancer Research Center, Shahid Beheshti University of Medical Sciences with invasive breast cancer, were treated with breast-conserving surgery and radiotherapy. Of those, 426 patients received a tumor bed boost with intraoperative electron radiotherapy (IOERT) during lumpectomy (58 patients with pure invasive lobular carcinoma, 239 patients with pure invasive ductal carcinoma, and 129 patients with other diagnoses). 542 patients received a tumor bed boost with conventional external beam radiotherapy post lumpectomy (24 patients with pure invasive lobular carcinoma, 418 patients with pure invasive ductal carcinoma, and 100 patients with other diagnoses). The patients were followed up to 49 months. A comprehensive list of clinical and pathologic features was evaluated for all patients. We retrospectively analyzed outcomes of breast cancer treated with boost intraoperative electron radiotherapy (pure ILC and IDC groups) and in other group treated with boost conventional external beam radiotherapy (pure ILC group). Results: None of the ILC patients had recurrence in the two groups. The four-year survival rate for ILC patients was 100%, but in the IDC group the survival rate was 97%. Survival analyses showed patients with IDC had a higher risk of ipsilateral breast tumor recurrence (IBTR) and metastasis. Conclusions: Overall, the rates of IBTR and metastasis in the ILC boost IOERT group were significantly low. This finding suggests that IOERT technique deployment in ILC had no inferiority compared with the control group.

Objective(s): Studies have reported that invasive ductal carcinoma (IDC) with coexisting ductal carcinoma in situ (DCIS) show lower metastatic potential and recurrence and better overall survival than pure IDC. In this study, we assessed F-18 fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) images of patients with newly diagnosed IDC to determine if there is any difference in PET findings in IDC-DCIS and pure IDC cases. Methods: FDG PET/CT images of patients with newly diagnosed IDC of the breast who subsequently underwent breast surgery and had histopathology result in our records were further evaluated. Tumor grade, pathological staging, and presence of DCIS were noted from the histopathology results. Standardized uptake value (SUV) of the primary tumor (SUVmax and SULmax), other hypermetabolic foci in the breast, and ipsilateral normal breast were measured. Presence of axillary and distant metastases was noted. Results: Fifty seven (57) patients with IDC were included. Coexisting DCIS was present in 44 (IDC-DCIS) and not present in 13 (pure IDC) cases. Per histopathology, the primary tumor was unifocal in 33 IDC-DCIS (75%) and 12 pure IDC (92. 3%) cases, and multifocal in 11 IDC-DCIS cases (25%), and 1 pure IDC case (7. 7%). FDG uptake was multifocal in 20 IDC-DCIS cases (45. 5%) and 1 pure IDC case (7. 7%), and unifocal in 24 IDC-DCIS (54. 5%), and 12 pure IDC (92. 3%) cases. There was no significant difference in patient age, size of the primary tumor, SUVmax and SULmax of the primary tumor and SUVmax of the normal breast in IDC-DCIS and pure IDC cases (p>0. 05). Pathology showed axillary metastasis in all 13 pure IDC (100%), and 27 IDC-DCIS (61. 4%) cases. PET showed axillary uptake in 25 IDC-DCIS (56. 8%), and 8 pure IDC (61. 5%) cases, and abnormal/questionable distant uptake in 12 IDC-DCIS cases and 1 pure IDC case. Conclusion: In our preliminary findings, multifocal breast FDG uptake and multifocal tumor appear to be more common in IDC-DCIS than pure IDC. There is no significant difference in SUV and size of the primary tumor in IDC-DCIS and pure IDC cases. Axillary metastases appear to be more common in pure IDC than IDC-DCIS cases.

Background & Objective: Breast cancer recurrence after surgery was a sign that the progress of the disease was continuing. Early detection of breast cancer patients who are at risk requires  development of a marker. Alfa smooth muscle actin (α-SMA) plays a role in the local recurrence process of invasive ductal carcinoma (IDC). Currently, existing tumor markers are used to predict the prognosis of breast cancer in general, not the early stages. Therefore, it was thought that finding α-SMA expression might predict early recurrence in early-stage IDC more accurately than others. This study investigated the potential role of α-SMA expression as a predictor of early recurrence in early-stage IDC and its relationship to clinicopathological factors.Methods: The study design was cross-sectional, with data obtained from the medical records of Dr. Koesnadi, General Hospital, Bondowoso, Indonesia. Bivariate and multivariate analysis was performed to analyze data.Results: We included 50 subjects divided into the local recurrence group (n=25) and the non-local recurrence group (n=25). We found a statistically significant correlation between the incidence of local recurrence in early-stage IDC and the high expression of α-SMA (odd ratio [OR]=23.22, 95% confidence interval [CI]=5.101-105.7, P=0.001). Clinicopathological variables and α-SMA expression did not have a significant correlation.Conclusion: In early-stage IDC, α-SMA expression had the potential to predict and could be an independent prognostic factor for early recurrence.

Background: Invasive lobular carcinoma (ILC) differs from invasive ductal carcinoma (IDC) in genomic profile, clinicopathologic behavior, and response to treatment. Despite favorable profile, ILC is susceptible to recurrence. Thus, most of studies did not include ILC in intraoperative radiotherapy (IORT) trials or considered it as a cautionary criteria, especially in accelerated partial breast irradiation (APBI). Objectives: In this study, we compared treatment outcome between breast cancer patients with ILC and IDC treating with breast conserving surgery and intraoperative electron radiotherapy (IOERT). Methods: A total of 191 patients with early breast cancer treated with breast conserving surgery and IOERT were included in the study. This study compared outcome of 42 ILC patients with 135 IDC patients. Fourteen patients were mixed type. ILC was a suitable criterion, as well. Local recurrence and disease-free survival were endpoints of study. Results: Median follow-up was 23. 17 month and 21. 17 month for IDC and ILC, respectively. Univariate analysis was done according to age, pathologic, and biologic factors and multivariate analysis was according molecular subtype. There were 3 patients with local recurrence. Two patients were in the IDC group and another one was the ILC group. There was no significant difference between two groups. The 4-year disease-free survival (DFS) was 95. 45% and 97. 40% for ILC and IDC, respectively. Conclusions: In this study, there was no significant difference in in-breast tumor recurrence (IBTR) and DFS between two groups. It was seem lobular carcinoma can be used for APBI and it may be a suitable criterion as the IDC.

Background: Ductal carcinoma in situ (DCIS) is widely recognized as the precursor of invasive ductal carcinoma (IDC). We aimed to compare clinicopathological characteristics and prognosis between IDC with and without coexisting DCIS stratified by biological subtypes to evaluate the clinical outcome of these two groups.Method: Data from 5814 patients with IDC (32.4) and IDC/DCIS (67.6%), who underwent surgery from December 1993 through December 2019, were retrospectively assessed. We evaluated the prognosis of IDC with coexisting DCIS in different molecular subtypes.Results: IDC/DCIS patients were younger (P < 0.001). They also presented with a low tumor grade and had less lymph node involvement compared with the pure IDC patients. Compared with the patients with IDC, luminal B subtype was more frequent in those with IDC/DCIS, with 19.4% versus 13.2 %; human epidermal growth factor receptor-2 enriched subtype was also more frequently observed, with 12.2 vs. 8.7%. The 5-year disease-free survival (DFS) was higher in the IDC/DCIS patients (P = 0.036). The survival outcomes significantly improved in the cases with a higher amount of DCIS. The presence of coexisting DCIS (P =0.038), tumor size (P < 0.001), lymph node status (P = 0.005), lymph vascular invasion (P = 0.02), and molecular subtypes (P < 0.001) were found to be DFS-associated independent prognostic factors.Conclusion: DCIS along with IDC were associated with improved prognosis. The presence of DCIS may be a marker of lower aggressiveness, and could be noticed as a prognostic factor in future treatment algorithms.

Background: In this study, we aimed to identify the predicting pathological factors affecting sentinel lymph node biopsy (SLNB) in patients with clinically node-negative breast cancer. Methods: Our single institution retrospective study was conducted at the Cancer Research Center of Shahid Beheshti University of Medical Sciences from 2018 to 2021. Data were imported into and analyzed using SPSS Version 28 for Windows (IBM Corp., Armonk, NY, USA). Results:  Of the 76 patients who underwent SLNB, 43 (56.6%) had negative SLNB and 33 (43.4%) had positive SLNB which led to axillary lymph node dissection (ALND). The relationship between hormone receptor status (ER/PR/Her2), pathology type (IDC, ILC, DCIS, LCIS), tumor size, and Ki67 expression was assessed. According to the results, axillary lymph node involvement can be predicted based on the scores and results of the three variables: IDC tumor type, lympho vascular invasion (LVI), and Ki67 expression. The positive relationship between IDC tumor type and LVI with SLNB indicates that with positive IDC tumor type and LVI, there is a higher probability of positive axillary lymph nodes (3.88 times higher probability for IDC tumor type and 6.75 times higher probability for the LVI factor). However, when the Ki67 expression is lower, the probability of positive axillary lymph nodes is higher (3.58 times higher probability). Conclusion: IDC tumor type, LVI, and lower Ki67 expression are independent predictive factors of positive SLNB.