• Dtsch Arztebl Int · Oct 2008

    Metastases in the Absence of a Primary Tumor: Advances in the Diagnosis and Treatment of CUP Syndrome.

    • Kai Neben, Gerdt Hübner, Gunnar Folprecht, Dirk Jäger, and Alwin Krämer.
    • Dtsch Arztebl Int. 2008 Oct 1; 105 (43): 733740733-40.

    IntroductionThe term cancer of unknown primary site (CUP) syndrome is used to describe malignancies in which a complete diagnostic work-up detects metastases in the absence of an identifiable primary tumor.MethodsBased on a selective literature review, national and international guidelines, and the experience of the "Arbeitskreis CUP-Syndrom der Arbeitsgemeinschaft Internistische Onkologie der Deutschen Krebsgesellschaft" (CUP Syndrome Committee of the Medical Oncology Joint Working Group of the German Cancer Society), developments in the diagnosis and treatment of CUP syndrome are reported.ResultsMost patients diagnosed with CUP have an unfavorable prognosis, with a life expectancy of less than 12 months. Nevertheless, it is important to identify subsets of patients in whom specific treatment offers the chance of long-term survival or even full recovery.DiscussionOnly rigorous further development of diagnostic tools and treatment protocols will enable an improvement of the poor prognosis of patients with CUP syndrome. Specific molecular treatment strategies have shown promising results.

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