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Radiochemotherapie des Analkarzinoms

Aktuelles zur Zielvolumen − Definition

Radiochemotherapy of anal cancer

Current data on target volumes − definition

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coloproctology Aims and scope

Zusammenfassung

Durch die Implementierung der intensitätsmodulierten Radiotherapie (IMRT) in das Gesamtkonzept der Radiochemotherapie des Analkarzinoms kann die Verträglichkeit der Behandlung entscheidend verbessert werden. Allerdings setzen moderne Techniken wie die IMRT eine exakte Bildgebung, am besten mittels FDG-PET-CT, und eine standardisierte, qualitätsgesicherte Zielvolumendefinition voraus. Grundsätzlich sollen neben dem Primärtumor einschließlich befallener Lymphknotenstationen zusätzlich elektiv folgende Zielgebiete erfasst werden: Mesorektum, Präsakralraum, iliakal-interne Lymphknoten, Fossa ischiorectalis, obturatorische Lymphknoten, iliakal-externe Lymphknoten und inguinale Lymphknoten. Die Gesamtdosis der IMRT soll an den elektiven Lymphknotengruppen 45 Gy, an den befallenen Lymphknoten 50,4–54 Gy und am Primärtumor 50,4–54 Gy (T1–2) bzw. 54–59,4 Gy (>T2) betragen.

Abstract

The implementation of intensity modulated radiation therapy (IMRT) in the total concept of radiochemotherapy for anal cancer means that tolerance of the treatment can be decisively improved. However, modern techniques such as IMRT require an exact imaging procedure preferentially using fluorodeoxyglucose positron emission tomography computed tomography (FDG-PET-CT) and a standardized, quality assurance defined target volume. The following elective target areas should also principally be included in addition to the primary tumor together with affected lymph node locations: mesorectum, presacral space, internal iliac lymph nodes, ischiorectal fossa, obturator crest lymph nodes, external iliac lymph nodes and inguinal lymph nodes. The total dose of IMRT should be 45 Gy for elective lymph nodes, 50.4-54 Gy for positive lymph nodes and 50.4-54 Gy for T1-2 and 54–59.4 Gy for primary tumors larger than T2.

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Correspondence to G.G. Grabenbauer.

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Dieser Beitrag wurde erstpubliziert in Onkologe (2012) 18:672–677.

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Grabenbauer, G. Radiochemotherapie des Analkarzinoms. coloproctology 35, 177–181 (2013). https://doi.org/10.1007/s00053-013-0374-0

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  • DOI: https://doi.org/10.1007/s00053-013-0374-0

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