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DOI: 10.1055/s-2004-44927
© Georg Thieme Verlag Stuttgart · New York
Pro Onkogenese und Kunststoffnetze
Pro Oncogenesis and Surgical MeshesPublication History
Publication Date:
24 February 2004 (online)
Zusammenfassung
Biomaterial-induzierte Tumoren, erstmalig 1948 beschrieben, entstehen vorzugsweise bei Nagetieren, die insgesamt eine hohe spontane Tumorentstehungstendenz zeigen.
Zur Prüfung einer Tumorentstehung in Assoziation zu chirurgischen Kunststoffnetzen, wurden im Rattenmodell gängige Netzmodifikationen, wie sie zur Reparation von Hernien eingesetzt werden, implantiert und nach einem Implantationszeitraum von bis zu 36 Monaten explantiert und histomorphologisch untersucht.
Die Tumorentwicklung stellte sich dabei abhängig von Materialmenge, Oberflächengröße und Porengröße des eingebrachten Netzimplantates, dar.
Nach mikroskopischer Untersuchung zeigten die Tumoren ein sarkomähnliches histomorphologisches Bild. Sie zeigten nukleäre Atypien unterschiedlichen Grades, erfüllten aber bei fehlendem invasiven, destruierenden Tumorwachstum und ohne Nachweis einer Metastasierung, nicht die Malignitätskriterien.
Die fremdmaterialinduzierten Tumorformationen der Ratte sind demnach vielmehr als benigne „sarkomähnliche Tumoren” einzuordnen.
Beim Menschen konnten derartige Tumorformationen bislang nicht beobachtet werden.
Abstract
Biomaterial induced tumors, first described in 1948, develope preferably in rodents, however, these animals have a high tumor incidence per se.
To prove tumor development in association with implantation of surgical meshes used for hernia repair, different mesh materials were implanted in rats and investigated histologically after an implantation time of up to 36 months.
The tumor development in rats was depending on the amount of material, the surface area and the pore size of the mesh material.
After microscopical investigation the tumors showed a sarcoma-like pattern with nuclear atypia. Nevertheless, without an invasive and destructive growth pattern and without metastasis, they did not meet the criteria of malignancy. Therefore, the foreign body induced tumors in rats are in fact benign sarcoma-like tumors.
Up to now, there are no reports on biomaterial induced tumor formation in association with surgical mesh implantation in men.
Schlüsselwörter
Hernie - Chirurgische Netze - Pathologische Risikoanalyse - Biokompatible Materialien - Tumoren
Key words
Hernia - surgical mesh - pathological risk-analysis - biocompatible materials - tumors
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Priv.-Doz. Dr. med. Benita Hermanns
Institut für Pathologie · Universitätsklinikum Aachen
Pauwelsstr. 30
52074 Aachen
Phone: 02 41-8 08 92 80
Fax: 02 41-8 08 24 39
Email: hermanns@pat.rwth-aachen.de