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Erschienen in: Acta Neurochirurgica 2/2014

01.02.2014 | Clinical Article - Brain Tumors

Extent of resection and survival in supratentorial infiltrative low-grade gliomas: analysis of and adjustment for treatment bias

verfasst von: Konstantinos Gousias, Johannes Schramm, Matthias Simon

Erschienen in: Acta Neurochirurgica | Ausgabe 2/2014

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Abstract

Background

Any correlation between the extent of resection and the prognosis of patients with supratentorial infiltrative low-grade gliomas may well be related to biased treatment allocation. Patients with an intrinsically better prognosis may undergo more aggressive resections, and better survival may then be falsely attributed to the surgery rather than the biology of the disease. The present study investigates the potential impact of this type of treatment bias on survival in a series of patients with low-grade gliomas treated at the authors’ institution.

Methods

We conducted a retrospective study of 148 patients with low-grade gliomas undergoing primary treatment at our institution from 1996–2011. Potential prognostic factors were studied in order to identify treatment bias and to adjust survival analyses accordingly.

Results

Eloquence of tumor location proved the most powerful predictor of the extent of resection, i.e., the principal source of treatment bias. Univariate as well as multivariate Cox regression analyses identified the extent of resection and the presence of a preoperative neurodeficit as the most important predictors of overall survival, tumor recurrence and malignant progression. After stratification for eloquence of tumor location in order to correct for treatment bias, Kaplan–Meier estimates showed a consistent association between the degree of resection and improved survival.

Conclusion

Treatment bias was not responsible for the correlation between extent of resection and survival observed in the present series. Our data seem to provide further support for a strategy of maximum safe resections for low-grade gliomas.
Literatur
1.
Zurück zum Zitat Ahmadi R, Dictus C, Hartmann C, Zürn O, Edler L, Hartmann M, Combs S, Herold-Mende C, Wirtz CR, Unterberg A (2009) Long-term outcome and survival of surgically treated supratentorial low-grade glioma in adult patients. Acta Neurochir (Wien) 151(11):1359–1365CrossRef Ahmadi R, Dictus C, Hartmann C, Zürn O, Edler L, Hartmann M, Combs S, Herold-Mende C, Wirtz CR, Unterberg A (2009) Long-term outcome and survival of surgically treated supratentorial low-grade glioma in adult patients. Acta Neurochir (Wien) 151(11):1359–1365CrossRef
2.
Zurück zum Zitat Bauman G, Fisher B, Watling C, Cairncross JG, Macdonald D (2009) Adult supratentorial low-grade glioma: long-term experience at a single institution. Int J Radiat Oncol Biol Phys 75(5):1401–1407PubMedCrossRef Bauman G, Fisher B, Watling C, Cairncross JG, Macdonald D (2009) Adult supratentorial low-grade glioma: long-term experience at a single institution. Int J Radiat Oncol Biol Phys 75(5):1401–1407PubMedCrossRef
3.
Zurück zum Zitat Bello L, Gallucci M, Fava M, Carrabba G, Giussani C, Acerbi F, Baratta P, Songa V, Conte V, Branca V, Stocchetti N, Papagno C, Gaini SM (2007) Intraoperative subcortical language tract mapping guides surgical removal of gliomas involving speech areas. Neurosurgery 60(1):67–80PubMedCrossRef Bello L, Gallucci M, Fava M, Carrabba G, Giussani C, Acerbi F, Baratta P, Songa V, Conte V, Branca V, Stocchetti N, Papagno C, Gaini SM (2007) Intraoperative subcortical language tract mapping guides surgical removal of gliomas involving speech areas. Neurosurgery 60(1):67–80PubMedCrossRef
4.
Zurück zum Zitat Capelle L, Fontaine D, Mandonnet E, Taillandier L, Golmard JL, Bauchet L, Pallud J, Peruzzi P, Baron MH, Kujas M, Guyotat J, Guillevin R, Frenay M, Taillibert S, Colin P, Rigau V, Vandenbos F, Pinelli C, Duffau H, French Réseau d’Étude des Gliomes (2013) Spontaneous and therapeutic prognostic factors in adult hemispheric World Health Organization Grade II gliomas: a series of 1097 cases: clinical article. J Neurosurg 118(6):1157–1168PubMedCrossRef Capelle L, Fontaine D, Mandonnet E, Taillandier L, Golmard JL, Bauchet L, Pallud J, Peruzzi P, Baron MH, Kujas M, Guyotat J, Guillevin R, Frenay M, Taillibert S, Colin P, Rigau V, Vandenbos F, Pinelli C, Duffau H, French Réseau d’Étude des Gliomes (2013) Spontaneous and therapeutic prognostic factors in adult hemispheric World Health Organization Grade II gliomas: a series of 1097 cases: clinical article. J Neurosurg 118(6):1157–1168PubMedCrossRef
5.
Zurück zum Zitat Chaichana KL, McGirt MJ, Laterra J, Olivi A, Quinones-Hinojosa A (2010) Recurrence and malignant degeneration after resection of adult hemispheric low-grade gliomas. J Neurosurg 112(1):10–17PubMedCrossRef Chaichana KL, McGirt MJ, Laterra J, Olivi A, Quinones-Hinojosa A (2010) Recurrence and malignant degeneration after resection of adult hemispheric low-grade gliomas. J Neurosurg 112(1):10–17PubMedCrossRef
6.
Zurück zum Zitat Chang EF, Clark A, Jensen RL, Bernstein M, Guha A, Carrabba G, Mukhopadhyay D, Kim W, Liau LM, Chang SM, Smith JS, Berger MS, McDermott MW (2009) Multiinstitutional validation of the University of California at San Francisco Low-Grade Glioma Prognostic Scoring System. Clinical article. J Neurosurg 111(2):203–210PubMedCrossRef Chang EF, Clark A, Jensen RL, Bernstein M, Guha A, Carrabba G, Mukhopadhyay D, Kim W, Liau LM, Chang SM, Smith JS, Berger MS, McDermott MW (2009) Multiinstitutional validation of the University of California at San Francisco Low-Grade Glioma Prognostic Scoring System. Clinical article. J Neurosurg 111(2):203–210PubMedCrossRef
7.
Zurück zum Zitat Chang EF, Clark A, Smith JS, Polley MY, Chang SM, Barbaro NM, Parsa AT, McDermott MW, Berger MS (2011) Functional mapping-guided resection of low-grade gliomas in eloquent areas of the brain: improvement of long-term survival. Clinical article. J Neurosurg 114(3):566–573PubMedCrossRef Chang EF, Clark A, Smith JS, Polley MY, Chang SM, Barbaro NM, Parsa AT, McDermott MW, Berger MS (2011) Functional mapping-guided resection of low-grade gliomas in eloquent areas of the brain: improvement of long-term survival. Clinical article. J Neurosurg 114(3):566–573PubMedCrossRef
8.
Zurück zum Zitat Chang EF, Potts MB, Keles GE, Lamborn KR, Chang SM, Barbaro NM, Berger MS (2008) Seizure characteristics and control following resection in 332 patients with low-grade gliomas. J Neurosurg 108(2):227–235PubMedCrossRef Chang EF, Potts MB, Keles GE, Lamborn KR, Chang SM, Barbaro NM, Berger MS (2008) Seizure characteristics and control following resection in 332 patients with low-grade gliomas. J Neurosurg 108(2):227–235PubMedCrossRef
9.
Zurück zum Zitat Chang EF, Smith JS, Chang SM, Lamborn KR, Prados MD, Butowski N, Barbaro NM, Parsa AT, Berger MS, McDermott MM (2008) Preoperative prognostic classification system for hemispheric low-grade gliomas in adults. J Neurosurg 109(5):817–824PubMedCrossRef Chang EF, Smith JS, Chang SM, Lamborn KR, Prados MD, Butowski N, Barbaro NM, Parsa AT, Berger MS, McDermott MM (2008) Preoperative prognostic classification system for hemispheric low-grade gliomas in adults. J Neurosurg 109(5):817–824PubMedCrossRef
10.
Zurück zum Zitat Claus EB, Horlacher A, Hsu L, Schwartz RB, Dello-Iacono D, Talos F, Jolesz FA, Black PM (2005) Survival rates in patients with low-grade glioma after intraoperative magnetic resonance image guidance. Cancer 103(6):1227–1233PubMedCrossRef Claus EB, Horlacher A, Hsu L, Schwartz RB, Dello-Iacono D, Talos F, Jolesz FA, Black PM (2005) Survival rates in patients with low-grade glioma after intraoperative magnetic resonance image guidance. Cancer 103(6):1227–1233PubMedCrossRef
11.
Zurück zum Zitat Daniels TB, Brown PD, Felten SJ, Wu W, Buckner JC, Arusell RM, Curran WJ, Abrams RA, Schiff D, Shaw EG (2011) Validation of EORTC prognostic factors for adults with low-grade glioma: a report using intergroup 86-72-51. Int J Radiat Oncol Biol Phys 81(1):218–224PubMedCentralPubMedCrossRef Daniels TB, Brown PD, Felten SJ, Wu W, Buckner JC, Arusell RM, Curran WJ, Abrams RA, Schiff D, Shaw EG (2011) Validation of EORTC prognostic factors for adults with low-grade glioma: a report using intergroup 86-72-51. Int J Radiat Oncol Biol Phys 81(1):218–224PubMedCentralPubMedCrossRef
12.
Zurück zum Zitat Duffau H (2005) Lessons from brain mapping in surgery for low-grade glioma: insights into associations between tumour and brain plasticity. Lancet Neurol 4(8):476–486PubMedCrossRef Duffau H (2005) Lessons from brain mapping in surgery for low-grade glioma: insights into associations between tumour and brain plasticity. Lancet Neurol 4(8):476–486PubMedCrossRef
13.
Zurück zum Zitat Duffau H, Capelle L (2004) Preferential brain locations of low-grade gliomas. Cancer 100(12):2622–2626PubMedCrossRef Duffau H, Capelle L (2004) Preferential brain locations of low-grade gliomas. Cancer 100(12):2622–2626PubMedCrossRef
14.
Zurück zum Zitat Ius T, Isola M, Budai R, Pauletto G, Tomasino B, Fadiga L, Skrap M (2012) Low-grade glioma surgery in eloquent areas: volumetric analysis of extent of resection and its impact on overall survival. A single-institution experience in 190 patients. J Neurosurg 117(6):1039–1052PubMedCrossRef Ius T, Isola M, Budai R, Pauletto G, Tomasino B, Fadiga L, Skrap M (2012) Low-grade glioma surgery in eloquent areas: volumetric analysis of extent of resection and its impact on overall survival. A single-institution experience in 190 patients. J Neurosurg 117(6):1039–1052PubMedCrossRef
15.
Zurück zum Zitat Jakola AS, Myrmel KS, Kloster R, Torp SH, Lindal S, Unsgård G, Solheim O (2012) Comparison of a Strategy Favoring Early Surgical Resection vs a Strategy Favoring Watchful Waiting in Low-Grade Gliomas. JAMA 308(18):1881–1888PubMedCrossRef Jakola AS, Myrmel KS, Kloster R, Torp SH, Lindal S, Unsgård G, Solheim O (2012) Comparison of a Strategy Favoring Early Surgical Resection vs a Strategy Favoring Watchful Waiting in Low-Grade Gliomas. JAMA 308(18):1881–1888PubMedCrossRef
16.
Zurück zum Zitat Jung TY, Jung S, Moon JH, Kim IY, Moon KS, Jang WY (2011) Early prognostic factors related to progression and malignant transformation of low-grade gliomas. Clin Neurol Neurosurg 113(9):752–757PubMedCrossRef Jung TY, Jung S, Moon JH, Kim IY, Moon KS, Jang WY (2011) Early prognostic factors related to progression and malignant transformation of low-grade gliomas. Clin Neurol Neurosurg 113(9):752–757PubMedCrossRef
17.
Zurück zum Zitat Keles GE, Lamborn KR, Berger MS (2001) Low-grade hemispheric gliomas in adults: a critical review of extent of resection as a factor influencing outcome. J Neurosurg 95(5):735–745PubMedCrossRef Keles GE, Lamborn KR, Berger MS (2001) Low-grade hemispheric gliomas in adults: a critical review of extent of resection as a factor influencing outcome. J Neurosurg 95(5):735–745PubMedCrossRef
18.
Zurück zum Zitat Keles GE, Lundin DA, Lamborn KR, Chang EF, Ojemann G, Berger MS (2004) Intraoperative subcortical stimulation mapping for hemispherical perirolandic gliomas located within or adjacent to the descending motor pathways: evaluation of morbidity and assessment of functional outcome in 294 patients. J Neurosurg 100(3):369–375PubMedCrossRef Keles GE, Lundin DA, Lamborn KR, Chang EF, Ojemann G, Berger MS (2004) Intraoperative subcortical stimulation mapping for hemispherical perirolandic gliomas located within or adjacent to the descending motor pathways: evaluation of morbidity and assessment of functional outcome in 294 patients. J Neurosurg 100(3):369–375PubMedCrossRef
19.
Zurück zum Zitat Klein M (2010) Health-related quality of life aspects in patients with low-grade glioma. Adv Tech Stand Neurosurg 35:213–235PubMed Klein M (2010) Health-related quality of life aspects in patients with low-grade glioma. Adv Tech Stand Neurosurg 35:213–235PubMed
20.
Zurück zum Zitat Kral T, Kurthen M, Schramm J, Urbach H, Meyer B (2006) Stimulation mapping via implanted grid electrodes prior to surgery for gliomas in highly eloquent cortex. Neurosurgery 58(1 Suppl):ONS36–ONS43PubMed Kral T, Kurthen M, Schramm J, Urbach H, Meyer B (2006) Stimulation mapping via implanted grid electrodes prior to surgery for gliomas in highly eloquent cortex. Neurosurgery 58(1 Suppl):ONS36–ONS43PubMed
21.
Zurück zum Zitat Kreth FW, Faist M, Grau S, Ostertag CB (2006) Interstitial 125I radiosurgery of supratentorial de novo WHO Grade 2 astrocytoma and oligoastrocytoma in adults: long-term results and prognostic factors. Cancer 106(6):1372–1381PubMedCrossRef Kreth FW, Faist M, Grau S, Ostertag CB (2006) Interstitial 125I radiosurgery of supratentorial de novo WHO Grade 2 astrocytoma and oligoastrocytoma in adults: long-term results and prognostic factors. Cancer 106(6):1372–1381PubMedCrossRef
22.
Zurück zum Zitat Kurzwelly D, Herrlinger U, Simon M (2010) Seizures in patients with low-grade gliomas–incidence, pathogenesis, surgical management, and pharmacotherapy. Adv Tech Stand Neurosurg 35:81–111PubMed Kurzwelly D, Herrlinger U, Simon M (2010) Seizures in patients with low-grade gliomas–incidence, pathogenesis, surgical management, and pharmacotherapy. Adv Tech Stand Neurosurg 35:81–111PubMed
23.
Zurück zum Zitat McGirt MJ, Chaichana KL, Attenello FJ, Weingart JD, Than K, Burger PC, Olivi A, Brem H, Quinoñes-Hinojosa A (2008) Extent of surgical resection is independently associated with survival in patients with hemispheric infiltrating low-grade gliomas. Neurosurgery 63(4):700–707PubMedCrossRef McGirt MJ, Chaichana KL, Attenello FJ, Weingart JD, Than K, Burger PC, Olivi A, Brem H, Quinoñes-Hinojosa A (2008) Extent of surgical resection is independently associated with survival in patients with hemispheric infiltrating low-grade gliomas. Neurosurgery 63(4):700–707PubMedCrossRef
24.
Zurück zum Zitat Muragaki Y, Chernov M, Maruyama T, Ochiai T, Taira T, Kubo O, Nakamura R, Iseki H, Hori T, Takakura K (2008) Low-grade glioma on stereotactic biopsy: how often is the diagnosis accurate? Minim Invasive Neurosurg 51(5):275–279PubMedCrossRef Muragaki Y, Chernov M, Maruyama T, Ochiai T, Taira T, Kubo O, Nakamura R, Iseki H, Hori T, Takakura K (2008) Low-grade glioma on stereotactic biopsy: how often is the diagnosis accurate? Minim Invasive Neurosurg 51(5):275–279PubMedCrossRef
25.
Zurück zum Zitat Neuloh G, Pechstein U, Cedzich C, Schramm J (2004) Motor evoked potential monitoring with supratentorial surgery. Neurosurgery 54(5):1061–1070PubMedCrossRef Neuloh G, Pechstein U, Cedzich C, Schramm J (2004) Motor evoked potential monitoring with supratentorial surgery. Neurosurgery 54(5):1061–1070PubMedCrossRef
26.
Zurück zum Zitat Pignatti F, van den Bent M, Curran D, Debruyne C, Sylvester R, Therasse P, Afra D, Cornu P, Bolla M, Vecht C, Karim AB, European Organization for Research and Treatment of Cancer Brain Tumor Cooperative Group; European Organization for Research and Treatment of Cancer Radiotherapy Cooperative Group (2002) Prognostic factors for survival in adult patients with cerebral low-grade glioma. J Clin Oncol 20(8):2076–2084PubMedCrossRef Pignatti F, van den Bent M, Curran D, Debruyne C, Sylvester R, Therasse P, Afra D, Cornu P, Bolla M, Vecht C, Karim AB, European Organization for Research and Treatment of Cancer Brain Tumor Cooperative Group; European Organization for Research and Treatment of Cancer Radiotherapy Cooperative Group (2002) Prognostic factors for survival in adult patients with cerebral low-grade glioma. J Clin Oncol 20(8):2076–2084PubMedCrossRef
27.
28.
Zurück zum Zitat Sawaya R, Hammoud M, Schoppa D, Hess KR, Wu SZ, Shi WM, Wildrick DM (1998) Neurosurgical outcomes in a modern series of 400 craniotomies for treatment of parenchymal tumors. Neurosurgery 42(5):1044–1055PubMedCrossRef Sawaya R, Hammoud M, Schoppa D, Hess KR, Wu SZ, Shi WM, Wildrick DM (1998) Neurosurgical outcomes in a modern series of 400 craniotomies for treatment of parenchymal tumors. Neurosurgery 42(5):1044–1055PubMedCrossRef
29.
Zurück zum Zitat Schomas DA, Laack NN, Rao RD, Meyer FB, Shaw EG, O’Neill BP, Giannini C, Brown PD (2009) Intracranial low-grade gliomas in adults: 30-year experience with long-term follow-up at Mayo Clinic. Neuro Oncol 11(4):437–445PubMedCentralPubMedCrossRef Schomas DA, Laack NN, Rao RD, Meyer FB, Shaw EG, O’Neill BP, Giannini C, Brown PD (2009) Intracranial low-grade gliomas in adults: 30-year experience with long-term follow-up at Mayo Clinic. Neuro Oncol 11(4):437–445PubMedCentralPubMedCrossRef
30.
Zurück zum Zitat Schramm J, Blumcke I, Ostertag CB, Schlegel U, Simon M, Lutterbach J (2006) Low-grade gliomas – current concepts. Zentralbl Neurochir 67(2):55–66PubMedCrossRef Schramm J, Blumcke I, Ostertag CB, Schlegel U, Simon M, Lutterbach J (2006) Low-grade gliomas – current concepts. Zentralbl Neurochir 67(2):55–66PubMedCrossRef
31.
Zurück zum Zitat Schramm J, Luyken C, Urbach H, Fimmers R, Blumcke I (2004) Evidence for a clinically distinct new subtype of grade II astrocytomas in patients with long-term epilepsy. Neurosurgery 55(2):340–347PubMedCrossRef Schramm J, Luyken C, Urbach H, Fimmers R, Blumcke I (2004) Evidence for a clinically distinct new subtype of grade II astrocytomas in patients with long-term epilepsy. Neurosurgery 55(2):340–347PubMedCrossRef
32.
Zurück zum Zitat Shaw E, Arusell R, Scheithauer B, O’Fallon J, O’Neill B, Dinapoli R, Nelson D, Earle J, Jones C, Cascino T, Nichols D, Ivnik R, Hellman R, Curran W, Abrams R (2002) Prospective randomized trial of low- versus high-dose radiation therapy in adults with supratentorial low-grade glioma: initial report of a North Central Cancer Treatment Group/Radiation Therapy Oncology Group/Eastern Cooperative Oncology Group study. J Clin Oncol 20(9):2267–2276PubMedCrossRef Shaw E, Arusell R, Scheithauer B, O’Fallon J, O’Neill B, Dinapoli R, Nelson D, Earle J, Jones C, Cascino T, Nichols D, Ivnik R, Hellman R, Curran W, Abrams R (2002) Prospective randomized trial of low- versus high-dose radiation therapy in adults with supratentorial low-grade glioma: initial report of a North Central Cancer Treatment Group/Radiation Therapy Oncology Group/Eastern Cooperative Oncology Group study. J Clin Oncol 20(9):2267–2276PubMedCrossRef
33.
Zurück zum Zitat Shaw EG, Berkey B, Coons SW, Bullard D, Brachman D, Buckner JC, Stelzer KJ, Barger GR, Brown PD, Gilbert MR, Mehta M (2008) Recurrence following neurosurgeon-determined gross-total resection of adult supratentorial low-grade glioma: results of a prospective clinical trial. J Neurosurg 109(5):835–841PubMedCrossRef Shaw EG, Berkey B, Coons SW, Bullard D, Brachman D, Buckner JC, Stelzer KJ, Barger GR, Brown PD, Gilbert MR, Mehta M (2008) Recurrence following neurosurgeon-determined gross-total resection of adult supratentorial low-grade glioma: results of a prospective clinical trial. J Neurosurg 109(5):835–841PubMedCrossRef
34.
Zurück zum Zitat Shaw EG, Wang M, Coons SW, Brachman DG, Buckner JC, Stelzer KJ, Barger GR, Brown PD, Gilbert MR, Mehta MP (2012) Randomized trial of radiation therapy plus procarbazine, lomustine, and vincristine chemotherapy for supratentorial adult low-grade glioma: initial results of RTOG 9802. J Clin Oncol 30(25):3065–3070PubMedCrossRef Shaw EG, Wang M, Coons SW, Brachman DG, Buckner JC, Stelzer KJ, Barger GR, Brown PD, Gilbert MR, Mehta MP (2012) Randomized trial of radiation therapy plus procarbazine, lomustine, and vincristine chemotherapy for supratentorial adult low-grade glioma: initial results of RTOG 9802. J Clin Oncol 30(25):3065–3070PubMedCrossRef
35.
Zurück zum Zitat Simon M, Neuloh G, von Lehe M, Meyer B, Schramm J (2009) Insular gliomas: the case for surgical management. J Neurosurg 110(4):685–695PubMedCrossRef Simon M, Neuloh G, von Lehe M, Meyer B, Schramm J (2009) Insular gliomas: the case for surgical management. J Neurosurg 110(4):685–695PubMedCrossRef
36.
Zurück zum Zitat Smith JS, Chang EF, Lamborn KR, Chang SM, Prados MD, Cha S, Tihan T, Vandenberg S, McDermott MW, Berger MS (2008) Role of extent of resection in the long-term outcome of low-grade hemispheric gliomas. J Clin Oncol 26(8):1338–1345PubMedCrossRef Smith JS, Chang EF, Lamborn KR, Chang SM, Prados MD, Cha S, Tihan T, Vandenberg S, McDermott MW, Berger MS (2008) Role of extent of resection in the long-term outcome of low-grade hemispheric gliomas. J Clin Oncol 26(8):1338–1345PubMedCrossRef
37.
Zurück zum Zitat Stummer W, Reulen HJ, Meinel T, Pichlmeier U, Schumacher W, Tonn JC, Rohde V, Oppel F, Turowski B, Woiciechowsky C, Franz K, Pietsch T, ALA-Glioma Study Group (2008) Extent of resection and survival in glioblastoma multiforme: identification of and adjustment for bias. Neurosurgery 62(3):564–576PubMedCrossRef Stummer W, Reulen HJ, Meinel T, Pichlmeier U, Schumacher W, Tonn JC, Rohde V, Oppel F, Turowski B, Woiciechowsky C, Franz K, Pietsch T, ALA-Glioma Study Group (2008) Extent of resection and survival in glioblastoma multiforme: identification of and adjustment for bias. Neurosurgery 62(3):564–576PubMedCrossRef
38.
Zurück zum Zitat Talos IF, Zou KH, Ohno-Machado L, Bhagwat JG, Kikinis R, Black PM, Jolesz FA (2006) Supratentorial low-grade glioma resectability: statistical predictive analysis based on anatomic MR features and tumor characteristics. Radiology 239(2):506–513PubMedCentralPubMedCrossRef Talos IF, Zou KH, Ohno-Machado L, Bhagwat JG, Kikinis R, Black PM, Jolesz FA (2006) Supratentorial low-grade glioma resectability: statistical predictive analysis based on anatomic MR features and tumor characteristics. Radiology 239(2):506–513PubMedCentralPubMedCrossRef
39.
Zurück zum Zitat Weller M, Berger H, Hartmann C, Schramm J, Westphal M, Simon M, Goldbrunner R, Krex D, Steinbach JP, Ostertag CB, Loeffler M, Pietsch T, von Deimling A, German Glioma Network (2007) Combined 1p/19q loss in oligodendroglial tumors: predictive or prognostic biomarker? Clin Cancer Res 13(23):6933–6937PubMedCrossRef Weller M, Berger H, Hartmann C, Schramm J, Westphal M, Simon M, Goldbrunner R, Krex D, Steinbach JP, Ostertag CB, Loeffler M, Pietsch T, von Deimling A, German Glioma Network (2007) Combined 1p/19q loss in oligodendroglial tumors: predictive or prognostic biomarker? Clin Cancer Res 13(23):6933–6937PubMedCrossRef
Metadaten
Titel
Extent of resection and survival in supratentorial infiltrative low-grade gliomas: analysis of and adjustment for treatment bias
verfasst von
Konstantinos Gousias
Johannes Schramm
Matthias Simon
Publikationsdatum
01.02.2014
Verlag
Springer Vienna
Erschienen in
Acta Neurochirurgica / Ausgabe 2/2014
Print ISSN: 0001-6268
Elektronische ISSN: 0942-0940
DOI
https://doi.org/10.1007/s00701-013-1945-0

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