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  • Title: Analyses of treatment variables for patients with childhood craniopharyngioma--results of the multicenter prospective trial KRANIOPHARYNGEOM 2000 after three years of follow-up.
    Author: Müller HL, Gebhardt U, Schröder S, Pohl F, Kortmann RD, Faldum A, Zwiener I, Warmuth-Metz M, Pietsch T, Calaminus G, Kolb R, Wiegand C, Sörensen N, study committee of KRANIOPHARYNGEOM 2000/2007.
    Journal: Horm Res Paediatr; 2010; 73(3):175-80. PubMed ID: 20197669.
    Abstract:
    BACKGROUND: Controversies surround various treatment variables for patients with childhood craniopharyngioma such as growth hormone (GH) replacement, which some believe can exacerbate recurrence/progression. We prospectively assessed the risk of tumor recurrence/progression in survivors of childhood craniopharyngioma. METHODS: Multivariable analyses of risk factors (age at diagnosis, degree of resection, irradiation, GH treatment and gender) and descriptive analyses of overall survival (OS) and event-free survival (EFS) rates were performed in 117 patients, recruited prospectively and evaluated after 3 years of follow-up in the German, Austrian and Swiss multicenter trial KRANIOPHARYNGEOM 2000. RESULTS: We observed a 3-year OS of 0.97 and a 3-year EFS of 0.46, indicating high recurrence rates after complete resection (CR) (n = 47; 3-year-EFS: 0.64) and high progression rates after incomplete resection (IR) (n = 64; 3-year EFS: 0.31). The risk of an event decreased by 80% after CR compared to IR (hazard ratio = 0.20; p < 0.001). Irradiation had protective effects on EFS: irradiated patients had an 88% lower risk of recurrence/progression compared to patients without/before irradiation (hazard ratio = 0.12; p < 0.001). GH treatment had no impact on 3-year EFS rates. CONCLUSIONS: Tumor recurrences/progressions are frequent and occur early after initial treatment of childhood craniopharyngioma. A radical resection preserving the integrity of hypothalamic structures appears optimal at original diagnosis. Irradiation was efficient in preventing recurrences/progressions. GH treatment had no impact on the low 3-year EFS observed in our study. However, further conclusions on the influence of GH on recurrence rates have to be refined to long-term follow-up studies of patients with childhood craniopharyngioma.
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