Publications by authors named "Feyer P"

Purpose: The aim of this review is to give an overview of the results of prospective and retrospective studies using allogenic reconstruction and postmastectomy radiotherapy (PMRT) in breast cancer and to make recommendations regarding this interdisciplinary approach.

Materials And Methods: A PubMed search was conducted to extract relevant articles from 2000 to 2024. The search was performed using the following terms: (breast cancer) AND (reconstruction OR implant OR expander) AND (radiotherapy OR radiation).

View Article and Find Full Text PDF
Article Synopsis
  • The review aimed to assess the effectiveness of radiotherapy in managing brain metastases and leptomeningeal carcinomatosis in breast cancer patients and to provide treatment recommendations based on existing literature.
  • A comprehensive search was conducted through PubMed for studies published between 1985 and May 2023, focusing on various types of radiotherapy for breast cancer-related brain metastases.
  • Conclusions indicate that while specific radiotherapy guidelines show variability based on breast cancer subtypes, stereotactic radiosurgery is generally recommended for 1-4 brain metastases, while whole-brain radiotherapy is advised for multiple cases, especially in symptomatic patients, although treatment plans should be tailored and may include reevaluating local options after several weeks.
View Article and Find Full Text PDF

Background: Radiation dermatitis (RD) remains the most common side effect in radiation therapy (RT) with various pharmaceutical options available for prevention and treatment. We sought to determine pharmaceutical management patterns of radiation dermatitis among radiation oncology professionals.

Methods: We conducted a survey on RD among the German-speaking community of radiation oncologists inquiring for their opinion on preventive and therapeutic pharmaceutical approaches for acute RD.

View Article and Find Full Text PDF

The S3-guideline on endometrial cancer, first published in April 2018, was reviewed in its entirety between April 2020 and January 2022 and updated. The review was carried out at the request of German Cancer Aid as part of the Oncology Guidelines Program and the lead coordinators were the German Society for Gynecology and Obstetrics (DGGG), the Gynecology Oncology Working Group (AGO) of the German Cancer Society (DKG) and the German Cancer Aid (DKH). The guideline update was based on a systematic search and assessment of the literature published between 2016 and 2020.

View Article and Find Full Text PDF
Article Synopsis
  • - The S3-guideline for endometrial cancer, initially released in April 2018, underwent a comprehensive review and update from April 2020 to January 2022, as requested by German Cancer Aid and coordinated by prominent gynecological and oncology organizations in Germany.
  • - The update focused on integrating new evidence and refining recommendations to enhance treatment approaches, emphasizing personalized therapies to minimize unnecessary radical surgeries and non-beneficial adjuvant treatments for low-risk patients.
  • - The revised guideline aims to optimize care for high-risk patients by clarifying the roles of radical surgery and additional treatments, ultimately improving survival rates and quality of life, while serving as a foundation for certified gynecological cancer centers.
View Article and Find Full Text PDF

Purpose: Radiation dermatitis (RD) represents one of the most frequent side effects in radiotherapy (RT). Despite technical progress, mild and moderate RD still affects major subsets of patients and identification and management of patients with a high risk of severe RD is essential. We sought to characterize surveillance and nonpharmaceutical preventive management of RD in German-speaking hospitals and private centers.

View Article and Find Full Text PDF

Background: A methylation-based classification of ependymoma has recently found broad application. However, the diagnostic advantage and implications for treatment decisions remain unclear. Here, we retrospectively evaluate the impact of surgery and radiotherapy on outcome after molecular reclassification of adult intracranial ependymomas.

View Article and Find Full Text PDF

Evidence from a few small randomized trials and retrospective cohorts mostly including various tumor entities indicates a prolongation of disease free survival (DFS) and overall survival (OS) from local ablative therapies in oligometastatic disease (OMD). However, it is still unclear which patients benefit most from this approach. We give an overview of the several aspects of stereotactic body radiotherapy (SBRT) in extracranial OMD in breast cancer from a radiation oncology perspective.

View Article and Find Full Text PDF

Background: During the last decade, partial breast irradiation (PBI) has gained traction as a relevant treatment option for patients with early-stage low-risk breast cancer after breast-conserving surgery. The TARGIT-A prospective randomized trial compared a "risk-adapted" intraoperative radiotherapy (IORT) approach with 50-kv X-rays (INTRABEAM®) as the PBI followed by optional whole-breast irradiation (WBI) and conventional adjuvant WBI in terms of observed 5-year in-breast recurrence rates. Recently, long-term data were published.

View Article and Find Full Text PDF

Background: Nausea and vomiting are common and distressing side effects of tumor therapy. Despite prophylaxis, 40-50% of patients suffer from nausea, and 20-30% from vomiting. Antiemetic prophylaxis and treatment are therefore of great importance for improving patients' quality of life and preventing sequelae such as tumor cachexia.

View Article and Find Full Text PDF

Moderate hypofractionation is the standard of care for adjuvant whole-breast radiotherapy after breast-conserving surgery for breast cancer. Recently, 10-year results from the FAST and 5‑year results from the FAST-Forward trial evaluating adjuvant whole-breast radiotherapy in 5 fractions over 5 weeks or 1 week have been published. This article summarizes recent data for moderate hypofractionation and results from the FAST and FAST-Forward trial on ultra-hypofractionation.

View Article and Find Full Text PDF

Purpose: Following neoadjuvant chemotherapy for breast cancer, postoperative systemic therapy, also called post-neoadjuvant treatment, has been established in defined risk settings. We reviewed the evidence for sequencing of postoperative radiation and chemotherapy, with a focus on a capecitabine and trastuzumab emtansine (T-DM1)-based regimen.

Methods: A systematic literature search using the PubMed/MEDLINE/Web of Science database was performed.

View Article and Find Full Text PDF
Article Synopsis
  • The guideline update aims to include new anticancer agents, antiemetics, and antiemetic regimens, specifically recommending dexamethasone for patients on checkpoint inhibitors (CPIs).
  • A systematic review analyzed recent studies on the efficacy of adding CPIs to chemotherapy, highlighting that dexamethasone should be part of the antiemetic regimen based on positive outcomes in two major trials with lung cancer patients.
  • Adult recommendations largely remain the same but now include options for olanzapine and updated dosing information, while pediatric recommendations incorporate fosaprepitant; no evidence supports removing dexamethasone when using CPIs with chemotherapy.
View Article and Find Full Text PDF

Background: Gene expression assays are increasingly used for decision-making regarding adjuvant chemotherapy in patients with hormone receptor-positive, HER2-negative breast cancer. There are some clinical situations in which there is also a need for better prognostic and predictive markers to better estimate the amount of benefit from adjuvant radiotherapy. The rising availability of gene expression analyses prompts the question whether their results can also be used to guide clinical decisions regarding adjuvant radiation.

View Article and Find Full Text PDF

Purpose: This consensus statement from the Breast Cancer Working Group of the German Society for Radiation Oncology (DEGRO) aims to define practical guidelines for accelerated partial-breast irradiation (APBI).

Methods: Recent recommendations for relevant aspects of APBI were summarized and a panel of experts reviewed all the relevant literature. Panel members of the DEGRO experts participated in a series of conferences, supplemented their clinical experience, performed a literature review, and formulated recommendations for implementing APBI in clinical routine, focusing on patient selection, target definition, and treatment technique.

View Article and Find Full Text PDF

Background: Skin-sparing (SSME) and nipple-sparing mastectomy (NSME) were developed to improve the cosmetic results for breast cancer (BC) patients, both allowing for immediate breast reconstruction. Recommendations for post-mastectomy radiotherapy (PMRT) are primarily derived from trials where patients were treated by standard mastectomies. Due to their more conservative character, SSME and especially NSME potentially leave more glandular tissue at risk for subclinical disease.

View Article and Find Full Text PDF

Purpose: The aim of this review was to analyze the respective efficacy of various heart-sparing radiotherapy techniques.

Material And Methods: Heart-sparing can be performed in three different ways in breast cancer radiotherapy: by seeking to keep the heart out of treated volumes (i.e.

View Article and Find Full Text PDF
Article Synopsis
  • The first German interdisciplinary S3-guideline for diagnosing and treating endometrial cancer was introduced in April 2018, with funding from German Cancer Aid and coordination by major gynecological organizations.
  • It emphasizes evidence-based, risk-adapted treatment strategies that can minimize unnecessary surgery and chemotherapy for low-risk patients, ultimately improving their quality of life and reducing healthcare costs.
  • For high-risk patients, the guideline outlines the best strategies for surgical intervention and additional therapies, aiming to enhance survival rates and ensure that quality indicators influence the certification of gynecological cancer centers.
View Article and Find Full Text PDF

The aim of this official guideline coordinated and published by the German Society for Gynecology and Obstetrics (DGGG) and the German Cancer Society (DKG) was to optimize the screening, diagnosis, therapy and follow-up care of breast cancer. The process of updating the S3 guideline published in 2012 was based on the adaptation of identified source guidelines. They were combined with reviews of evidence compiled using PICO (Patients/Interventions/Control/Outcome) questions and with the results of a systematic search of literature databases followed by the selection and evaluation of the identified literature.

View Article and Find Full Text PDF

Background: The German multicenter randomized phase II larynx organ preservation (LOP) trial DeLOS-II was carried out to prove the hypothesis that cetuximab (E) added to induction chemotherapy (IC) and radiotherapy improves laryngectomy-free survival (LFS; survival with preserved larynx) in locally advanced laryngeal/hypopharyngeal cancer (LHSCC).

Patients And Methods: Treatment-naïve patients with stage III/IV LHSCC amenable to total laryngectomy (TL) were randomized to three cycles IC with TPF [docetaxel (T) and cisplatin (P) 75 mg/m2/day 1, 5-FU (F) 750 mg/m2/day days 1-5] followed by radiotherapy (69.6 Gy) without (A) or with (B) standard dose cetuximab for 16 weeks throughout IC and radiotherapy (TPFE).

View Article and Find Full Text PDF

The aim of this official guideline coordinated and published by the German Society for Gynecology and Obstetrics (DGGG) and the German Cancer Society (DKG) was to optimize the screening, diagnosis, therapy and follow-up care of breast cancer. The process of updating the S3 guideline dating from 2012 was based on the adaptation of identified source guidelines which were combined with reviews of evidence compiled using PICO (Patients/Interventions/Control/Outcome) questions and the results of a systematic search of literature databases and the selection and evaluation of the identified literature. The interdisciplinary working groups took the identified materials as their starting point to develop recommendations and statements which were modified and graded in a structured consensus procedure.

View Article and Find Full Text PDF

The first German interdisciplinary S3-guideline on the diagnosis, therapy and follow-up of patients with endometrial cancer was published in April 2018. Funded by German Cancer Aid as part of an Oncology Guidelines Program, the lead coordinators of the guideline were the German Society of Gynecology and Obstetrics (DGGG) and the Gynecological Oncology Working Group (AGO) of the German Cancer Society (DKG). The use of evidence-based, risk-adapted therapy to treat low-risk women with endometrial cancer avoids unnecessarily radical surgery and non-useful adjuvant radiotherapy and/or chemotherapy.

View Article and Find Full Text PDF

Background: Late cardiac toxicities caused by (particularly left-sided) breast radiotherapy (RT) are now recognized as rare but relevant sequelae, which has prompted research on risk structure identification and definition of threshold doses to heart subvolumes. The aim of the present review was to critically discuss the clinical evidence on late cardiac reactions based on dose-dependent outcome reports for mean heart doses as well as doses to cardiac substructures.

Methods: A literature review was performed to examine clinical evidence on radiation-induced heart toxicities.

View Article and Find Full Text PDF

Neoadjuvant chemotherapy (NACT) has been widely adopted into the multidisciplinary management of breast cancer. The prognostic impact of treatment response has been clearly demonstrated. However, the impact of treatment response on the indication for adjuvant radiotherapy is unclear.

View Article and Find Full Text PDF

Purpose: To review the evidence regarding post-mastectomy radiotherapy (PMRT) and regional nodal irradiation (RNI) after neoadjuvant chemotherapy (NACT) for breast cancer, with a special focus on individualization of adjuvant radiotherapy based on treatment response.

Methods: A systematic literature search using the PubMed/Medline database was performed. We included prospective and retrospective reports with a minimum of 10 patients that had been published since 1 January 2000, and provided clinical outcome data analyzed by treatment response and radiotherapy.

View Article and Find Full Text PDF