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  • Title: Treatment and outcome of the patients with rhabdomyosarcoma of the biliary tree: Experience of the Cooperative Weichteilsarkom Studiengruppe (CWS).
    Author: Urla C, Warmann SW, Sparber-Sauer M, Schuck A, Leuschner I, Klingebiel T, Blumenstock G, Seitz G, Koscielniak E, Fuchs J.
    Journal: BMC Cancer; 2019 Oct 14; 19(1):945. PubMed ID: 31610788.
    Abstract:
    BACKGROUND: Biliary rhabdomyosarcoma (RMS) is the most common biliary tumor in children. The management of affected patients contains unique challenges because of the rarity of this tumor entity and its critical location at the porta hepatis, which can make achievement of a radical resection very difficult. METHODS: In a retrospective chart analysis we analysed children suffering from biliary RMS who were registered in three different CWS trials (CWS-96, CWS-2002P, and SoTiSaR registry). RESULTS: Seventeen patients (12 female, 5 male) with a median age of 4.3 years were assessed. The median follow-up was 42.2 months (10.7-202.5). The 5-year overall (OS) and event free survival (EFS) rates were 58% (45-71) and 47% (34-50), respectively. Patients > 10 years of age and those with alveolar histology had the worst prognosis (OS 0%). Patients with botryoid histology had an excellent survival (OS 100%) compared to those with non-botryoid histology (OS 38%, 22-54, p = 0.047). Microscopic complete tumor resection was achieved in almost all patients who received initial tumor biopsy followed by chemotherapy and delayed surgery. CONCLUSION: Positive predictive factors for survival of children with biliary RMS are age ≤ 10 years and botryoid tumor histology. Primary surgery with intention of tumor resection should be avoided.
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