Use of positron emission tomography in the evaluation of diffuse intrinsic brainstem gliomas in children.

BACKGROUND: Diffuse intrinsic brainstem gliomas (DIBSGs) in children remain difficult tumors to treat and have a very poor prognosis. Intensifying both chemotherapy and radiation programs have been attempted without success. Positron emission tomography (PET) has been used to differentiate benign from malignant tumors and may predict outcome. OBJECTIVES: To determine whether PET can characterize a specific metabolic pattern of DIBSGs and correlate this with patient survival. METHODS: We conducted a retrospective review of patients with DIBSGs and PET scans at diagnosis. Data for ¹8[F] fluorodeoxyglucose (FDG) and ¹¹C-methionine (CMET) PET scans were collected. Treatment and survival were reviewed. RESULTS: We identified 30 patients with DIBSGs, 25 of whom had FDG and/or CMET PET scans. Scans showed both focal and generalized metabolic activity, and the patterns showed no correlation with survival. Patients with both FDG and CMET positive scans had a mean survival of 380 days, whereas those negative for both isotopes had a mean survival of 446 days. CONCLUSIONS: There was no specific PET pattern identified in this DIBSG cohort but a trend toward improved survival was noted with absence of FDG and CMET metabolism. Metabolically active areas may suggest potential sites for biopsy. We believe that biopsy is essential for improving therapy for this patient population.

A review of childhood and adolescent craniopharyngiomas with particular attention to hypothalamic obesity.

BACKGROUND: Although craniopharyngiomas are considered "benign" neoplasms by the World Health Organization classification, these tumors may create significant morbidity and mortality in patients. Hypothalamic obesity is a frequent complication of craniopharyngiomas and is refractory to current management options. PATIENTS/METHODS: We reviewed 24 cases of craniopharyngiomas treated from 1992 to 2010 in patients <18 years of age regarding clinical presentation, neuroimaging, recurrence, morbidity, and mortality, with particular attention to hypothalamic obesity. RESULTS: Our cohort conformed to published data in regard to neuroimaging characteristics, and clinical findings in the areas of endocrine, visual, neurological, neurobehavioral, and hypothalamic domains. At last follow-up, 53% of our patients were overweight (8%) or obese (46%). Only 25% of our patients had a healthy body mass index. Contrasting these data with body mass indices at diagnosis, where 21% of patients were overweight and 17% were obese, we found that there was a significant trend towards obesity over time. A significant portion of our mortality appears to be related to complications of obesity. The Native American population in Arizona appears to have a statistically greater incidence of obesity in childhood. Despite our small sample size, 75% of our Native Americans were obese at last follow-up and accounted for 50% of the mortality. CONCLUSION: Hypothalamic obesity is a significant complication of craniopharyngiomas associated with increased mortality. The development of hypothalamic obesity is influenced by premorbid obesity, genetics, and therapy received, specifically radiation. Because of the intractability of hypothalamic obesity, improved understanding of neuroendocrine mechanisms, genomics, and newer antiobesity medications will be necessary to curb this significant complication.

A symptom checklist for children with cancer: the Therapy-Related Symptom Checklist-Children.

BACKGROUND: Symptom monitoring and alleviation are basic to the care of children and adolescents with cancer. A symptom checklist helps facilitate this process. OBJECTIVES: The primary objective of this study was to calibrate a child-friendly, clinically usable checklist capturing symptom occurrence and severity; a secondary objective was to examine age group differences: 5 to 11 years (n = 222) and 12 to 17 years (n = 163) and sex differences: males (54%) and females (46%), and correlate symptom severity, functional status, and quality of life. METHODS: Three hundred eighty-five children/adolescents at 5 university-affiliated outpatient oncology clinics: central, western, eastern, southeastern United States. Diagnoses were acute lymphoblastic leukemia (45%), solid tumors (14%), nervous system tumors (18%), and others (23%). Principal component factor analysis, confirmatory factor analysis, correlational statistics, t test, Wilcoxon test were performed. RESULTS: (a) Robust 30-item checklist, 7 factors; (b) 14 of 30 symptoms reported by at least 40% of patients. Top 5 are feeling sluggish (77%), nausea (72%), appetite loss (66%), irritable (61%), and vomiting (54%). (c) Sixteen of 30 symptoms reported at severity 2 or greater: "quite a bit." (d) Therapy-Related Symptom Checklist-Children (TRSC-C) scores are as follows: range, 0 to 89; mean, 25.14 (SD, 18.68). (e) Cronbach α = .9106. (f) Older children reported greater symptom severities: TRSC-C (t = 2.73, P = .003). (g) There were no sex differences on the TRSC-C total score. (h) Lansky correlations with TRSC-C (r = -0.32; P = .02); factors: nutrition related (r = -0.36; P = .05); oropharyngeal (r = -0.51; P = .0002); and respiratory (r = - 0.25; P = .06). (i) Pediatric Quality of Life Inventory correlation with TRSC-C (r = -0.68; P = .0001). CONCLUSION: The new TRSC-C has good measurement properties and is ready for use in clinics and research. IMPLICATIONS FOR PRACTICE: Use of the TRSC-C is consistent with guidelines emphasizing self-report of patient symptoms, shared patient decision making, and improved communications among patients, clinicians, and significant others.

Students with brain tumors: their post-treatment perceptions of teachers, peers, and academics and retrospective views on school during treatment.

The purpose of this pilot study was: (1) to determine how students surviving brain tumors (BTs) perceive their teachers' responses to them, their own academic performance, and their interactions with peers at school using a new measure; and (2) to describe students' retrospective perceptions of schooling while undergoing treatment. Using a sample of 22 students treated for a BT (ages 9-18) and 22 comparison (ages 8-19), no significant BT-control group differences regarding perceptions of teacher response, academic performance, and interactions with peers at school were found. Generally, students with BTs reported positive school experiences during treatment including favorable perceptions of their teachers' effectiveness, enjoyment of schoolwork, and the quality of their schooling. Additionally, they felt that completing schoolwork during treatment was important. The results of this study may provide insight into the perceived psychosocial adjustment and academic performance of students with BTs during and after treatment.