AGO-Empfehlungen zur operativen Therapie des Mammakarzinoms: Update 2022

Zusammenfassung

Die Empfehlungen der AGO-Kommission Mamma zur operativen Therapie des Mammakarzinoms wurden zuletzt im März 2022 aktualisiert (www.ago-online.de). Da die operative Therapie einen von mehreren Teilschritten bei der Behandlung des Mammakarzinoms darstellt, sind eine umfangreiche diagnostische und onkologische Expertise eines Brustoperateurs und eine gute interdisziplinäre Zusammenarbeit mit den diagnostischen Radiologen von großer Bedeutung. Die wichtigsten Änderungen betreffen die Lokalisationstechniken, die Resektionsränder, das axilläre Management im neoadjuvanten Setting und die Bewertung der Netze in der rekonstruktiven Chirurgie. Aufgrund von Metanaanalysen randomisierter Studien wurde der Empfehlungsgrad der intraoperativen Mammasonografie zur Lokalisation nicht palpabler Befunde auf „++“ erhöht. Somit wird die Technik als gleichwertig zur Drahtlokalisation angesehen, vorausgesetzt, es handelt sich um eine sonografisch gut darstellbare Läsion, der Operateur verfügt über umfangreiche Kenntnisse in der Mammasonografie und hat Zugang zu einem geeigneten Ultraschallgerät während der Operation. Beim invasiven Mammakarzinom wird das Erreichen von negativen Resektionsrändern („no tumor on ink“) angestrebt, unabhängig davon, ob eine extensive intraduktale Komponente vorliegt oder nicht. Onkoplastische Operationen können durch die Vielzahl der existierenden Techniken in ausgewählten Fällen auch eine Mastektomie ersetzen und sind im Vergleich zu einer regulären Segmentresektion hinsichtlich der onkologischen Sicherheit bei vergleichbaren Komplikationsraten gleichwertig. Patientinnen mit cN0-Status, die eine neoadjuvante Chemotherapie erhalten, wird eine Sentinel-Node-Exzision nach Abschluss der Chemotherapie empfohlen. Bei initial suspekten Lymphknoten wird die minimalinvasive Sicherung empfohlen. Nach der neoadjuvanten Chemotherapie stehen Patientinnen mit initial 1–3 suspekten Lymphknoten und gutem Ansprechen (ycN0) die „Targeted axillary Dissection“ und die Axilladissektion als gleichwertige Optionen zur Verfügung.

Abstract

The recommendations of the AGO Breast Committee on the surgical therapy of breast cancer were last updated in March 2022 (www.ago-online.de). Since surgical therapy is one of several partial steps in the treatment of breast cancer, extensive diagnostic and oncological expertise of a breast surgeon and good interdisciplinary cooperation with diagnostic radiologists is of great importance. The most important changes concern localization techniques, resection margins, axillary management in the neoadjuvant setting and the evaluation of the meshes in reconstructive surgery. Based on meta-analyses of randomized studies, the level of recommendation of an intraoperative breast ultrasound for the localization of non-palpable lesions was elevated to “++”. Thus, the technique is considered to be equivalent to wire localization, provided that it is a lesion which can be well represented by sonography, the surgeon has extensive experience in breast ultrasound and has access to a suitable ultrasound device during the operation. In invasive breast cancer, the aim is to reach negative resection margins (“no tumor on ink”), regardless of whether an extensive intraductal component is present or not. Oncoplastic operations can also replace a mastectomy in selected cases due to the large number of existing techniques, and are equivalent to segmental resection in terms of oncological safety at comparable rates of complications. Sentinel node excision is recommended for patients with cN0 status receiving neoadjuvant chemotherapy after completion of chemotherapy. Minimally invasive biopsy is recommended for initially suspect lymph nodes. After neoadjuvant chemotherapy, patients with initially 1–3 suspicious lymph nodes and a good response (ycN0) can receive the targeted axillary dissection and the axillary dissection as equivalent options.

Schlüsselwörter

Mammakarzinom - Brustchirurgie - chirurgische Therapie - Leitlinien - neoadjuvante Chemotherapie

Key words

breast cancer - breast surgery - surgical therapy - guidelines - neoadjuvant chemotherapy

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