Outcome following treatment of vertebral tumors in 20 dogs (1986-1995)

2000 ◽  
Vol 36 (3) ◽  
pp. 245-251 ◽  
Author(s):  
WS Dernell ◽  
BJ Van Vechten ◽  
RC Straw ◽  
SM LaRue ◽  
BE Powers ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Radiation Therapy ◽  
Survival Time ◽  
Median Survival ◽  
Significant Influence ◽  
Median Survival Time ◽  
Vertebral Column ◽  
Neurological Status ◽  
Local Failure

Twenty dogs with histopathologically confirmed primary (n=15) or metastatic (n=5) osteosarcoma (n=14) or fibrosarcoma (n=6) of the vertebral column were treated with surgery (n=4), radiation therapy and chemotherapy (n=6), surgery and chemotherapy (n=2), or surgery, radiation, and chemotherapy (n=8). All dogs died due to their disease; 15 died due to local failure, and five died due to nonvertebral metastasis. Overall median survival time was 135 days, with a range of 15 to 600 days. Of the factors evaluated, only postoperative neurological status had a significant influence on outcome by multivariate analysis. This study supports the overall guarded prognosis for dogs with vertebral neoplasia. Better combinations of surgery, chemotherapy, and radiation therapy remain to be defined for this difficult subset of animal cancer.

Comparison of Survival Between Cerebellar and Supratentorial Glioblastoma Patients

Neurosurgery ◽  
2013 ◽  
Vol 73 (2) ◽  
pp. 240-246 ◽  
Author(s):  
Sunil Jeswani ◽  
Miriam Nuño ◽  
Vanessa Folkerts ◽  
Debraj Mukherjee ◽  
Keith L. Black ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Radiation Therapy ◽  
Survival Time ◽  
Surgical Resection ◽  
Median Survival ◽  
Median Survival Time ◽  
Extent Of Resection ◽  
Tumor Location ◽  
General Belief ◽  
Cerebellar Glioblastoma

Abstract BACKGROUND: Cerebellar glioblastoma multiforme (cGBM) is rare, and although there is a general belief that these tumors have a worse prognosis than supratentorial GBM (sGBM), few studies have been published to support this belief. OBJECTIVE: To investigate the effect of cerebellar location on survival through a case-control design comparing overall survival time of cGBM and sGBM patients. METHODS: The Surveillance, Epidemiology, and End Results (SEER) registry was used to identify 132 patients with cGBM (1973-2008). Each cGBM patient was matched with an sGBM patient from among 20 848 sGBM patients on the basis of age, extent of resection, decade of diagnosis, and radiation therapy using propensity score matching. RESULTS: Within the cGBM, 37% were older than 65 years of age, 62% were men, and 87% were white. Most patients underwent surgery and radiation (74%), whereas only 26% underwent surgical resection only. The median survival time for the cGBM and sGBM matched cohort was 8 months; however, the survival distributions differed (log-rank P = .04). Survival time for cGBM vs sGBM at 2 years was 21.5% vs 8.0%, and 12.7% vs 5.3% at 3 years. Multivariate analysis of survival among cGBM patients showed that younger age (P < .0001) and having radiation therapy (P < .0001) were significantly associated with reduced hazard of mortality. Among all patients, multivariate analysis showed that tumor location (P = .03), age (P < .0001), tumor size (P = .009), radiation (P < .0001), and resection (P < .0001) were associated with survival time in the unmatched cohort. CONCLUSION: Median survival time for cGBM and sGBM patients was 8 months, but cGBM patients had a survival time advantage as the study progressed. These findings suggest that cGBM patients should be treated as aggressively as sGBM patients with surgical resection and radiation therapy.

Resection, biopsy, and survival in malignant glial neoplasms

1993 ◽  
Vol 78 (5) ◽  
pp. 767-775 ◽  
Author(s):  
Bertrand C. Devaux ◽  
Judith R. O'Fallon ◽  
Patrick J. Kelly
Keyword(s):  
Radiation Therapy ◽  
Survival Time ◽  
Median Survival ◽  
Median Survival Time ◽  
Tumor Resection ◽  
External Beam Radiation ◽  
Newly Diagnosed ◽  
Content Type ◽  
Grade Iii ◽  
Fine Print

✓ Between July, 1984, and October, 1988, 263 patients (163 male, 100 female), aged from 4 to 83 years (mean 52 years), with malignant brain gliomas underwent surgical procedures: stereotactic biopsy in 160 and resection in 103 patients. There were 170 grade IV astrocytomas, 17 grade IV mixed oligoastrocytomas, 44 grade III astrocytomas, 22 grade III mixed oligoastrocytomas, and 10 malignant oligodendrogliomas. Overall median survival time was 30.1 weeks for grade IV gliomas, 87.7 weeks for grade III gliomas, and 171.3 weeks for malignant oligodendrogliomas. Multivariate analysis in 218 newly diagnosed cases revealed that the variables most strongly correlated with survival time were: tumor grade, patient age, seizures as a first symptom, a Karnofsky Performance Scale score of less than 70%, tumor resection, and a radiation therapy dose greater than 50 Gy. The proportions of patients receiving tumor resection versus biopsy in each of these prognosis factor groups were similar. Since most of the 22 patients with midline and brain-stem tumors were treated with biopsy alone, these were excluded. Considering 196 newly diagnosed patients with cortical and subcortical tumors, grade IV glioma patients undergoing resection of the contrast-enhancing mass (as evidenced on computerized tomography and magnetic resonance imaging) and postoperative external beam radiation therapy lived longer than those undergoing biopsy only and radiation therapy (median survival time 50.6 weeks and 33.0 weeks, respectively; Smirnov test, p = 0.0380). However, survival in patients with resected grade III gliomas was no better than in those with biopsied grade III lesions (p = 0.746). The authors conclude that, in selected grade IV gliomas, resection of the contrast-enhancing mass followed by radiation therapy is associated with longer survival times than radiation therapy after biopsy alone.

Radiation therapy in the treatment of canine and feline thymomas: a retrospective study (1985-1999)

2001 ◽  
Vol 37 (5) ◽  
pp. 489-496 ◽  
Author(s):  
AN Smith ◽  
JC Wright ◽  
Brawner WRJr ◽  
SM LaRue ◽  
L Fineman ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Retrospective Study ◽  
Survival Time ◽  
Median Survival ◽  
Stable Disease ◽  
Tumor Size ◽  
Median Survival Time ◽  
Overall Response Rate ◽  
Response Rate ◽  
Clinical Signs

A retrospective study was performed of 17 dogs and seven cats with various stages of thymoma treated with radiation alone or as an adjunctive therapy. Analysis revealed an overall response rate of 75% (15/20 evaluable cases). Partial (i.e., >50% reduction in tumor size) and complete (i.e., no detectable tumor) responses were included. Complete responses were rare (4/20). Three of five animals with stable disease (i.e., <50% change in tumor size) had improvements in clinical signs, despite lack of measurable response. A median survival time of 248 days (range, 93 to 1,657+ days) was achieved in dogs, and a median survival time of 720 days (range, 485 to 1,825+ days) was achieved in cats. Radiation therapy appears to be useful in the management of invasive thymomas in dogs and cats.

scholarly journals Pituitary metastases: current practice in Japan

2015 ◽  
Vol 123 (4) ◽  
pp. 998-1007 ◽  
Author(s):  
Mika Habu ◽  
Hiroshi Tokimura ◽  
Hirofumi Hirano ◽  
Soichiro Yasuda ◽  
Yasushi Nagatomo ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Survival Time ◽  
Clinical Features ◽  
Median Survival ◽  
Median Survival Time ◽  
Cell Cancer ◽  
Optic Tract ◽  
Mass Lesion ◽  
Contributing Factors ◽  
Pituitary Metastases

OBJECT With advancement of cancer treatment and development of neuroimaging techniques, contemporary clinical pictures of pituitary metastases (PMs) must have changed from past reports. The goal of this paper was to elucidate the clinical features of PMs and current clinical practice related to those lesions. In this retrospective study, questionnaires were sent to 87 physicians who had treated PMs in Japan. RESULTS Between 1995 and 2010, 201 patients with PMs were treated by the participating physicians. The diagnosis of PM was histologically verified in 69 patients (34.3%). In the other 132 patients (65.7%), the PM was diagnosed by their physicians based on neuroimaging findings and clinical courses. The most frequent primary tumor was lung (36.8%), followed by breast (22.9%) and kidney (7.0%) cancer. The average interval between diagnosis of primary cancer and detection of PM was 2.8 ± 3.9 (SD) years. Major symptoms at diagnosis were visual disturbance in 30.3%, diabetes insipidus in 27.4%, fatigue in 25.4%, headache in 20.4%, and double vision in 17.4%. Major neuroimaging features were mass lesion in the pituitary stalk (63.3%), constriction of tumor at the diaphragmatic hiatus (44.7%), hypothalamic mass lesion (17.4%), and hyperintensity in the optic tract (11.4%). Surgical treatment was performed in 26.9% of patients, and 74.6% had radiation therapy; 80.0% of patients who underwent radiotherapy had stereotactic radiotherapy. The median survival time was 12.9 months in total. Contributing factors for good prognosis calculated by Cox proportional hazard analysis were younger age, late metastasis to the pituitary gland, smaller PM size, and radiation therapy. The Kaplan-Meier survival was significantly better in patients with breast cancer and renal cell cancer than in those with lung cancer. CONCLUSIONS At the time of this writing, approximately 60% (120/201) of PMs had been treated by stereotactic radiation therapy in Japan. The median survival time was much longer than that reported in past series. To confirm the changes of clinical features and medical practice, a prospective and population-based survey is mandatory.

Outcome Of MDS and AML With MDS-Related Changes: Treatment Versus Prognostic Factors

Blood ◽  
2013 ◽  
Vol 122 (21) ◽  
pp. 5223-5223
Author(s):  
Nadja Jaekel ◽  
Susann Schulze ◽  
Cora Graneist ◽  
Rainer Krahl ◽  
Wolfram Poenisch ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Prognostic Factors ◽  
Survival Time ◽  
Median Survival ◽  
Median Survival Time ◽  
Conflicts Of Interest ◽  
Negative Impact ◽  
Allogeneic Hct ◽  
Comorbidity Burden ◽  
The Impact

Abstract The significance of host- and disease-related prognostic factors on outcome in patients (pts) with MDS and AML with MDS-related changes (sAML) depends on the treatment given. The impact of therapy opposed to prognostic variables on the heterogeneity of MDS and sAML was investigated. Patients and methods From January, 2004-August, 2012, 367 pts (MDS, n=208; sAML, n=159) consecutively treated (median age 63y) at the University of Leipzig were included. Patients (84%) with marrow blasts >10% received induction chemotherapy (CT; 59%) or azacitidine (AZA; 25%) (after its approval in the EU in January, 2009) with the intention of performing a subsequent allogeneic hematopoietic cell transplantation (HCT) in pts <70y. Up-front HCT was scheduled if blasts were <10% (n=56). Cytogenetics were categorized according to Schanz et al, JCO 2012 for MDS and the WHO classification for sAML. As confounders in the estimation of therapy, host- and disease-related features were investigated in a multistep process. 38% of pts had >2 comorbidities with no difference between MDS and sAML. The sAML group (median blasts 40%) included 69 and 81 pts with previous MDS and MDS-related cytogenetic abnormality respectively. Cytogenetics were poor and very poor in 34% of MDS. Outcome at two years are presented. Results Median interval between diagnosis of MDS and therapy was 3.6 months. Median survival time for sAML was 15 vs 72 months for MDS (p<0.0005). Overall, age was higher (median 68y) and blasts lower (median 13%) in the AZA group compared to CT (62y and 27%) (p<0.0005). Cytogenetics and the comorbidity burden (CB) were comparable. OS with AZA was similar to up-front HCT (68%) and superior to CT (48%) (p=0.01). OS was 50% if HCT was performed after CT (136 pt) compared to CT alone (p=0.01). In the 20% of pts >70y, AZA was given to 52% and CT to 48%. OS was 55% and best with AZA (p=0.01). Median survival times were 30 for AZA/MDS, 27 for AZA/AML, 15 for CT/AML, and 5 months for CT/MDS. Of the 110 pts <70y with MDS, AZA was given to 50 (45%) and CT to 60 (55%). The IPSS, cytogenetics, CB, BM blasts (10% vs 11.5%) were similar in both groups. With a median age of 63y, the AZA/MDS group was older than the CT/MDS group (median age 60y) (p=0.005). OS for both groups was 68%. NRM (16%) and RI (38% vs 34%) were alike. For the 114 pts <70y with sAML (median age 62%; median blasts 44%) treated with CT, OS was 40% and inferior to MDS (AZA/MDS, p=0.007; CT/MDS, p=0.01) due to higher RI (57%) (p=0.008). Overall, 218 (78%) pts <70y received HCT (after a median of 3 AZA cycles for AZA/MDS). Ferritin, cytogentics, CB, type of donor, and blasts at HCT (median 4%) were comparable in the transplant groups (AZA/MDS, CT/MDS, HCT up-front, CT/sAML). Irrespective of prior therapy (p=0.6), interval between therapy and HCT, and blasts <5 vs >5-<10%, outcome in the MDS groups (OS, 60%, NRM 29%, RI, 32%) was similar. In multivariate analysis, >2 comorbidities and very poor cytogenetics were associated with an inferior OS (p=0.001)and a higher RI (p=0.003). With a median survival time of 11 months for sAML and a RI of 49%, outcome after HCT for sAML was inferior to MDS (p=0.005). In multivariate analysis, blasts <5%, >2 comorbidities were associated with a poor outcome. For MDS/CT and sAML/CT, a complex karyotype (38%) tended to decrease OS (p=0.06) and increase RI (p=0.01) after HCT. Conclusions Treatment was able to reduce the significance of most negative host- and disease-specific prognostic factors on outcome in MDS. AZA is superior to CT in elderly patients and equal to CT in younger patients with MDS and seems to have no negative impact on outcome after HCT. Despite the improvement achieved with allogeneic HCT, AML with MDS-related changes remains a distinct clinic-pathologic entity associated with a worse outcome. Genetics rather than marrow blasts are an important determinant of prognosis after treatment including allogeneic HCT. Disclosures: No relevant conflicts of interest to declare.

RSR13 Plus Cranial Radiation Therapy in Patients With Brain Metastases: Comparison With the Radiation Therapy Oncology Group Recursive Partitioning Analysis Brain Metastases Database

2003 ◽  
Vol 21 (12) ◽  
pp. 2364-2371 ◽  
Author(s):  
Edward Shaw ◽  
Charles Scott ◽  
John Suh ◽  
Sidney Kadish ◽  
Baldassarre Stea ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Brain Metastases ◽  
Survival Time ◽  
Median Survival ◽  
Median Survival Time ◽  
Recursive Partitioning ◽  
Radiation Therapy Oncology Group ◽  
Class Ii ◽  
Recursive Partitioning Analysis ◽  
Oncology Group

Purpose: This phase II, open-label, multicenter study assessed the efficacy and safety of the potential radiation enhancer RSR13 plus cranial radiation therapy (RT) in patients with brain metastases. The primary end point was patient survival in comparison with the Radiation Therapy Oncology Group Recursive Partitioning Analysis Brain Metastases Database (RTOG RPA BMD). Patients and Methods: Eligibility criteria were age ≥ 18 years, Karnofsky performance score ≥ 70, and brain metastases with solid tumor histology. Patients received cranial RT, 30 Gy in 10 fractions of 3 Gy each, preceded by RSR13, 50 to 100 mg/kg intravenously over 30 minutes. Univariate and multivariate comparisons of survival and cause of death were made between class II study patients and RTOG BMD patients. Results: Fifty-seven RPA class II patients were enrolled. With a minimum follow-up of 24 months, the median survival time and 1- and 2-year survival rates were 6.4 months, 23%, and 11% for the RSR13-treated patients compared with 4.1 months, 15%, and 3% for the RTOG BMD patients (P = .0174). In an exact-matched case analysis (n = 38), median survival time for RSR13 patients was 7.3 months versus 3.4 months for the RTOG BMD patients (P = .006). There was a 54% reduction in the risk of death for RSR13 patients (P = .0267). RSR13-related adverse events of greater than or equal to grade 3 toxicity that occurred in more than one patient included hypoxia, headache, anemia, fatigue, hypertension, and intracranial hypertension. Conclusion: RSR13 plus cranial RT resulted in a significant improvement in survival, as well as a reduction in death due to brain metastases, compared with class II patients in the RTOG BMD.

Correlates of survival and the Daumas-Duport grading system for astrocytomas

1991 ◽  
Vol 74 (1) ◽  
pp. 27-37 ◽  
Author(s):  
Tai Seung Kim ◽  
Andrea L. Halliday ◽  
E. Tessa Hedley-Whyte ◽  
Karen Convery
Keyword(s):  
Radiation Therapy ◽  
Survival Time ◽  
Median Survival ◽  
Median Survival Time ◽  
Massachusetts General Hospital ◽  
Cox Proportional Hazards Model ◽  
Grading System ◽  
Survival Times ◽  
Histological Features ◽  
Grade 3

✓ In order to examine the correlation between prognosis and the histological features of nuclear atypia, mitosis, endothelial proliferation, and necrosis in supratentorial adult astrocytomas, the authors reviewed 251 such cases treated at the Massachusetts General Hospital between 1972 and 1980. One point was given for the presence of each feature. The total number of features was translated into a grade as follows: none of the four features = Grade 1 (one patient), one feature = Grade 2 (36 patients), two features = Grade 3 (33 patients), and three or four features = Grade 4 (181 patients). The period of survival was significantly associated with grade, the presence or absence of each of the four histological features, patient's age, type of operation, radiation therapy, and extent of tumor (log rank, p < 0.05). The variables associated with grade were age (p < 0.001) and radiation therapy (p < 0.02). After adjustment for these variables using a Cox proportional-hazards model, the difference in overall survival time between patients in Grades 2 and 3 was not statistically significant. When comparable groups of patients were examined in terms of age or receipt of radiation therapy, the median survival times differed markedly. Patients 50 years of age or less had a median survival time of 68 months (Grade 2 tumors), 29 months (Grade 3 tumors), and 13 months (Grade 4 tumors). Patients over 50 years of age had a median survival time of 6 months (Grade 2 and 4 tumors) and 9 months (Grade 3 tumors). Those patients who had received radiation therapy had a median survival time of 68 months (Grade 2 tumors), 21 months (Grade 3 tumors), and 11 months (Grade 4 tumors). Those patients who did not receive radiation therapy had a median survival time of 1 month (Grade 2 tumors) and 2 months (Grade 3 and 4 tumors); over half of these patients died within 2 months of surgery. This grading system, originally proposed by Daumas-Duport, et al., is simple, objective, and reproducible, and correlates well with survival times. The authors recommend that astrocytomas be graded on a scale of 1 to 4, with Grade 1 reserved for the rare adult supratentorial astrocytoma with none of the four histological features.

Reoperation for glioblastoma

1981 ◽  
Vol 55 (6) ◽  
pp. 917-921 ◽  
Author(s):  
Byron Young ◽  
Edward H. Oldfield ◽  
William R. Markesbery ◽  
Dennis Haack ◽  
Phillip A. Tibbs ◽  
...  
Keyword(s):  
Glioblastoma Multiforme ◽  
Survival Time ◽  
Median Survival ◽  
Anaplastic Astrocytoma ◽  
Median Survival Time ◽  
Neurological Status ◽  
Significant Determinant ◽  
Tumor Removal ◽  
Content Type ◽  
Fine Print

✓ The results of a second operation for tumor removal in 24 adult patients with supratentorial glioblastoma multiforme or anaplastic astrocytoma were analyzed. The median survival time after reoperation was 14 weeks. Five of the 24 patients lived 6 months or longer after reoperation. Only three of these patients maintained a Karnofsky rating (KR) of at least 60 for 6 months or longer after reoperation. Preoperative neurological status (KR) is the most significant determinant of survival after reoperation (p = 0.02). When the KR is at least 60, median survival after reoperation is 22 weeks. When the KR prior to reoperation is less than 60, median survival is 9 weeks. Only one of 13 patients with a KR of less than 60 prior to reoperation survived longer than 6 months after the second operation. The interval between first and second operation is significantly related to survival (p = 0.03), but when adjustment is made for the KR the interoperative interval is no longer significantly related to survival after the second operation (p = 0.39). Age, sex, and location of tumor were not significantly related to duration of survival. This study suggests that reoperation is most likely to produce the best result when the KR is at least 60 and the interval between operations is longer than 6 months. Using these criteria, one-third of the patients could be expected to survive with a KR of at least 60 for 6 months. The study indicates that reoperation should not be carried out when the KR is less than 60.

scholarly journals Twenty Years of Radiation Therapy of Unresectable Intrahepatic Cholangiocarinoma: Internal or External? A Systematic Review and Meta-Analysis

Liver Cancer ◽  
2021 ◽  
pp. 1-18
Author(s):  
Qian Yu ◽  
Chenyu Liu ◽  
Anjana Pillai ◽  
Osman Ahmed
Keyword(s):  
Systematic Review ◽  
Radiation Therapy ◽  
Survival Time ◽  
Median Survival ◽  
Median Survival Time ◽  
Meta Analysis ◽  
Random Effect Model ◽  
External Beam Radiation ◽  
Complication Rates ◽  
Beam Radiation

<b><i>Purpose:</i></b> Both external beam radiation therapy (EBRT) and selective-internal radiation therapy (SIRT) are implemented to treat unresectable intrahepatic cholangiocarcinoma (iCCA). The present study aimed to evaluate the efficacy of EBRT and SIRT in managing iCCA through a systematic review and meta-analysis. <b><i>Methods:</i></b> PubMed and Cochrane database were queried to search for studies published from January 2000 toJune 2020 without language restrictions. Median survival time, overall survival, and radiological response were extracted. Secondary outcomes such as complication rates, predictors of survival, and downstage to surgery were pooled. Patient-level survival data were obtained to generate Kaplan-Meier survival graph. Pooled outcomes were analyzed with a random-effect model. <b><i>Results:</i></b> Twenty-nine and 20 studies including 732 and 443 patients from the SIRT and EBRT groups were included in the present study. From initial radiation treatment, the median survival time for patients who underwent SIRT and EBRT were 12.0 (95% confidence interval [CI]: 10.8–14.6) and 13.6 (95% CI: 11.1–16.0) months, respectively. As first-line therapy, the median survival time was 36.1 (95% CI: 20.6–39.5) months for SIRT and 11.0 (95% CI: 9.3–13.6) months for EBRT. Both radiation modalities were effective in downstaging initially unresectable iCCA to surgery (SIRT: 30.5%; EBRT: 18.3%). Patients in the SIRT group encountered more post-embolization abdominal pain (6.9 vs. 2.2%), ulcer (1.0 vs. 0.5%), nausea (1.6 vs. 0.7%), anorexia (5.9 vs. 0%), thrombocytopenia (7.3 vs. 6.0%), hyperbilirubinemia (5.2 vs. 2.1%), and hypoalbuminemia (13.2 vs. 3.3%), whereas EBRT was associated with higher rates of anemia (0.6 vs. 7.5%) and neutropenia (6.5 vs. 11.0%). <b><i>Conclusions:</i></b> Both EBRT and SIRT were safe and effective in treating unresectable iCCA. However, available evidence was highly heterogeneous regarding patient population, limiting fair comparison between 2 radiation modalities. Future high-quality comparative studies are warranted.

Oligodendrogliomas: the Mayo Clinic experience

1992 ◽  
Vol 76 (3) ◽  
pp. 428-434 ◽  
Author(s):  
Edward G. Shaw ◽  
Bernd W. Scheithauer ◽  
Judith R. O'Fallon ◽  
Henry D. Tazelaar ◽  
Dudley H. Davis
Keyword(s):  
Radiation Therapy ◽  
Survival Time ◽  
Median Survival ◽  
Median Survival Time ◽  
Survival Rates ◽  
Subtotal Resection ◽  
Postoperative Radiation ◽  
Postoperative Radiation Therapy ◽  
Extent Of Surgical Resection ◽  
Age And Sex

✓ Eighty-one patients with pure supratentorial oligodendrogliomas underwent surgery alone (19 patients) or surgery plus postoperative radiation therapy (63 patients) between the years 1960 and 1982. The median survival time and the 5-, 10-, and 15-year survival rates for these 82 patients were 7.1 years, 54%, 34%, and 24%, respectively; these values were significantly different from those for an age- and sex-matched normal reference population. Univariate and multivariate survival analyses were performed on 13 possible prognostic factors including: patient age and sex; presence of seizures; site, size, side, computerized tomography (CT) enhancement, grade, and calcification of the tumor; and treatment (extent of surgical resection, lobectomy, radiation dose, and radiation field). Of these factors, tumor grade as classified by the Kernohan and St. Anne-Mayo methods was most strongly associated with survival. Patients with Grade 1 or 2 tumors by either grading method had a median survival time and 5- and 10-year survival rates of approximately 9.8 years, 75%, and 46%, respectively, compared to 3.9 years, 41%, and 20% for those with Grade 3 or 4 tumors. The extent of surgical resection was also associated with survival. The 19 patients who underwent gross total resection of their tumor had a median survival time and 5- and 10-year survival rates of 12.6 years, 74%, and 59%, compared to 4.9 years, 46%, and 23%, respectively, for the 63 who had subtotal resection. When comparing the 19 patients who underwent surgery alone with the 63 who had surgery plus postoperative radiation therapy, there did not appear to be a survival benefit to be gained from the addition of postoperative radiation therapy. However, the patients who had surgery alone tended to have gross total resections and lower tumor grades. Analysis of the subset of 63 patients who underwent subtotal resection alone or with radiation therapy showed that the median survival time and 5- and 10-year survival rates were: 2 years, 25%, and 25% for the eight patients with subtotal resection alone; 4.5 years, 39%, and 20% for the 26 patients with surgery and low-dose (< 5000 cGy) radiation therapy; and 7.9 years, 62%, and 31% for the 29 patients receiving surgery and high-dose radiation therapy (≥ 5000 cGy), respectively.

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