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Improved Neuropsychological Outcome in Children With Brain Tumors Diagnosed During Infancy and Treated Without Cranial Irradiation

Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX

Joann L. Ater, MD

Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX

Donna R. Copeland, PhD

Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX

Neuropsychological outcome of 28 patients with brain tumors diagnosed before the age of 36 months (mean, 19 months) was assessed using a comprehensive battery of tests. Elapsed time between diagnosis and testing averaged 6.2 years. Half the patients had received cranial radiation therapy and surgery, with and without chemotherapy, whereas the rest had received only surgery, with or without chemotherapy. Groups were comparable with respect to tumor diagnosis and location, age at diagnosis, race, and sex. Intellectual functioning was significantly lower in children whose treatment included cranial irradiation than in those treated without cranial irradiation, and this effect was more pronounced in nonverbal than in verbal intellectual abilities. Mean scores for the radiation group were lower than for the no-radiation group in all areas assessed and were significantly below age-based normative means in five of the eight cognitive areas: intellectual, memory, attention, motor, and visual-spatial skills. Mean scores for children in the no-radiation group were generally within the average range in all cognitive areas except visual-spatial skills, which were significantly below age-based normative means. Endocrine deficiencies and growth retardation were much more prevalent in patients treated with cranial irradiation. Because the immature brain is susceptible to treatment-related pathologic changes, infants are at greater risk than older children for significant, long-term neuropsychological, endocrine, and growth sequelae. In children treated without cranial irradiation, morbidity was minimized without an increased rate of mortality. (J Child Neurol 1992;7:281-290).

Journal of Child Neurology, Vol. 7, No. 3, 281-290 (1992)
DOI: 10.1177/088307389200700308


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