Zusammenfassung
Die nicht-muskelinvasiven Karzinome der Harnblase (NMIBC) umfassen eine sehr heterogene Gruppe von Tumoren, deren biologisches Verhalten in erster Linie vom Differenzierungsgrad abhängt. Low-grade-NMIBC zeichnen sich durch ein hohes Rezidivrisiko, jedoch ein sehr geringes Progressionsrisiko aus. Ziel von Diagnostik und Therapie ist also v. a. die sichere Visualisierung und vollständige Resektion aller Herde. Zytologie und andere Urinmarker sind v. a. aufgrund der unzureichenden Sensitivität nicht hilfreich. Eine Nachresektion ist nur in Ausnahmefällen erforderlich, der Nutzen einer Erhaltungsinstillationsprophylaxe über eine einmalige Frühinstillation hinaus ist in den meisten Fällen fraglich. Auch bei den Low-grade-NIMBC ist eine Risikostratifizierung, z. B. nach den Vorgaben von EORTC oder EAU, sinnvoll.
Abstract
Nonmuscle-invasive bladder cancer (NMIBC) comprises a very heterogeneous group of malignancies; the biological behavior of these tumors depends primarily on their grading. Low-grade NMIBC are characterized by a high propensity for recurrence but a very low risk for progression to muscle invasion or metastatic disease. Thus, the first line goal of diagnostic procedures and therapy is reliable visualization and complete resection of all foci. Cytology and other urine-based markers fail due to insufficient sensitivity. A second resection might be necessary only in selected intermediate risk cases; the positive effect of maintenance instillation protocols beyond a single postoperative instillation is questionable for the majority of patients. Risk stratification, e.g., according to the EORTC or EAU proposals, also makes sense in low grade NMIBC.
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Interessenkonflikt. P.J. Olbert, C.H. Ohlmann und C. Schwentner geben an, dass kein Interessenkonflikt besteht.
Dieser Beitrag beinhaltet keine Studien an Menschen oder Tieren.
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Olbert, P., Ohlmann, C. & Schwentner, C. Therapie des nicht-muskelinvasiven Low-grade-Harnblasenkarzinoms. Urologe 54, 484–490 (2015). https://doi.org/10.1007/s00120-015-3773-8
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DOI: https://doi.org/10.1007/s00120-015-3773-8