Search the Community
Showing results for tags 'EBRT'.
Found 2 results
Charles (Chuck) Maack posted a topic in Articles on other siteshttp://tinyurl.com/pcwv6zd Information in the above reference indicates that the administration of Xofigo/Alpharadin/Radium 223 in company with abiraterone/Zytiga increased the effectiveness of Xofigo as well as overall survival. Combining EBRT (External Beam Radiation Therapy) with Xofigo increased likelihood of bone marrow failure.
Int J Radiat Oncol Biol Phys. 2011 Aug 4. [Epub ahead of print] Perineural Invasion Predicts Increased Recurrence, Metastasis, and Death from Prostate Cancer following Treatment with Dose-Escalated Radiation Therapy. Feng FY, Qian Y, Stenmark MH, Halverson S, Blas K, Vance S, Sandler HM, Hamstra DA. Source The University of Michigan Medical Center, Ann Arbor, MI; The Ann Arbor Veteran Affairs Medical System, Ann Arbor, MI. Abstract PURPOSE: To assess the prognostic value of perineural invasion (PNI) for patients treated with dose-escalated external-beam radiation therapy for prostate cancer. METHODS AND MATERIALS: Outcomes were analyzed for 651 men treated for prostate cancer with EBRT to a minimum dose ≥75 Gy. We assessed the impact of PNI as well as pretreatment and treatment-related factors on freedom from biochemical failure (FFBF), freedom from metastasis (FFM), cause-specific survival (CSS), and overall survival. RESULTS: PNI was present in 34% of specimens at biopsy and was significantly associated with higher Gleason score (GS), T stage, and prostate-specific antigen level. On univariate and multivariate analysis, the presence of PNI was associated with worse FFBF (hazard ratio = 1.7, p <0.006), FFM (hazard ratio = 1.8, p <0.03), and CSS (HR = 1.4, p <0.05) compared with absence of PNI; there was no difference in overall survival. Seven-year rates of FFBF, FFM, and CCS were 64% vs. 80%, 84% vs. 92%, and 91% vs. 95% for those patients with and without PNI, respectively. On recursive partitioning analysis, PNI predicted for worse FFM and CSS in patients with GS 8-10, with FFM of 67% vs. 89% (p <0.02), and CSS of 69% vs. 91%, (p <0.04) at 7 years for those with and without PNI, respectively. CONCLUSIONS: The presence of PNI in the prostate biopsy predicts worse clinical outcome for patients treated with dose-escalated external-beam radiation therapy. Particularly in patients with GS 8-10 disease, the presence of PNI suggests an increased risk of metastasis and prostate cancer death. Copyright © 2011 Elsevier Inc. All rights reserved. PMID: 21820250