Trimming long‐term tunneled central venous catheters in pediatric patients

Long‐term tunneled central venous catheters (CVC) are employed in critically ill patients. Manufacturers do not provide patient‐customized devices; therefore, trimming is required for pediatric use. Scanning Electron Microscopy (SEM) coupled with energy‐dispersive X‐ray spectroscopy and attenuated total reflection‐Fourier transform infrared spectroscopy (ATR‐FTIR) was used to assess changes induced by different trimming methods on single and double lumen Hickman–Broviac catheters. Increased roughness, exposure of inorganic macroaggreagates and increase in surface inorganic charges were generated by the trimming procedure, with the scalpel producing a smoother surface compared to scissors. Trimming produces changes on the CVC surface that may influence the rate of long‐term complications. Pediatr Blood Cancer 2013; 60: 152–155. © 2012 Wiley Periodicals, Inc.     

Neuropsychological sequelae of childhood cancer in long-term survivors

In order to assess the effects of various cancer treatments on neuropsychological functioning, 74 long-term survivors of childhood cancer were examined. A comprehensive battery of tests was administered to two CNS treatment groups (irradiated and nonirradiated leukemia and lymphoma patients) and a control group (solid tumor and Hodgkin disease patients receiving no CNS treatment). The CNS-irradiated group obtained lower scores than the other two groups, with significant differences in visual-motor and fine motor skills, spatial memory, and arithmetic achievement resulting in significant differences in IQ scores (VIQ, PIQ, FSIQ). The results are discussed in relation to: (1) the effects of CNS irradiation on cognitive development; (2) the specificity of these effects; and (3) the relationship of age at diagnosis to treatment effects. It is concluded that although there is a general lowering of scores after CNS irradiation, the effect is most pronounced for nonlanguage skills. Age at diagnosis was less important than the type of treatment, with CNS irradiation reducing performance regardless of when cancer was diagnosed. There were indications that children with any type of cancer diagnosed before age 5 years are more likely to have some cognitive difficulties.     

Long-term follow-up of survivors of childhood cancer

Objective: This study was designed to improve the long-term follow-up of childhood cancer survivors by developing standard monitoring for adverse effects; Providing concise treatment summaries for each patient and identifying already existing adverse effects; Determining patient risks for long-term adverse effects; and providing individualized 10-year of plants for followup.Methods: A retrospective chart review of long-term childhood cancer survivors followed by the institution’s pediatric oncologists was performed. Criteria for review included being at least 5 years from diagnosis and 2 years off chemotherapy. Patients are followed annually by the pediatric oncologists.Results: At the time of review, there were 26 long-term survivors of childhood cancers enrolled at the clinic. Their charts have been reviewed and treatment summaries formulated. Fifty-four adverse effects have been detected. 74% of the patients have long-term adverse effects from receiving cancer therapy. The most common were growth hormone deficiency, hypothyroidism, seizures, and hearing loss. Ten year follow-up plans have been devised for each patients.Conclusion: The presence of long-term adverse effects is common in childhood cancer survivors. The pediatrician is pivotal in helping assure their patients are receiving adequate follow-up to detect these complications as well as assisting in the transition to care as an adult.     

Obstacles in the prevention of psychological sequelae in survivors of childhood cancer

This article reviews some of the elements of surviving childhood cancer. It is evident that there are psychological, social, and neuropsychological sequelae of surviving cancer; and therefore there is a need for prevention of psychological sequelae in survivors of childhood cancer. This article outlines four obstacles to their prevention--the lack of adequate research, the distribution of resources, professional attitudes, and the "Damocles syndrome" perspective--and suggests some means by which these obstacles may be overcome.     

Long-term sequelae of cancer treatment on the central nervous system in childhood

Increasing numbers of children with cancer, including those with acute lymphocytic leukemia and medulloblastoma, are experiencing long-term disease control. As survival increases, so does the recognition that the treatment used to prolong survival may have significant detrimental effects on the central nervous system (CNS). Because of the slow replication rate of most constituents of the CNS, these effects tend to be delayed. Radiotherapy, and to a lesser extent, chemotherapy (primarily methotrexate) have been implicated in the causation of such sequelae. The pathogenesis of CNS damage is only partially understood and evidence suggests that direct effects on intracranial endothelial cells and brain white matter and immunologic mechanism play a role. A spectrum of clinical syndromes may occur, including radionecrosis, necrotizing leukoencephalopathy, mineralizing microangiopathy with dystrophic calcification, cerebellar sclerosis and spinal cord dysfunction. The two most common forms of sequelae are neuropsychological and neuroendocrinologic damage. The frequency, degree of and etiology of neurocognitive dysfunction is less than completely elucidated. Radiotherapy has been implicated as the major cause of damage, but the relationship between radiotherapy and the type of damage caused and the volume and dose of radiotherapy and degree of cognitive damage is unclear. Cognitive deficits are progressive in nature. Younger children are more likely to suffer the severest damage; but no patient of any age is free of risk of damage. Growth hormone impairment is the most common form of neuroendocrinologic dysfunction. There is increasing evidence that children with cancer who are long-term survivors are at increased risk for the development of secondary CNS tumors; possibly due, in part, to previous treatment. Much work needs to be done to characterize the sequelae which may occur, develop means of earlier detection, investigate ways to ameliorate sequelae and devise less toxic treatment.     

Long-term follow-up of childhood cancer survivors: future directions for clinical care and research

Improvement in survival after childhood cancer has resulted in a growing population of childhood cancer survivors, causing the healthcare community to focus on providing appropriate care to the survivors, and addressing issues related to the etiology and prevention of long-term sequelae of cancer and its treatment. The overarching goal is to decrease the morbidity related to cancer treatment, and improve the overall quality of life, such that cancer survivors can successfully integrate back into society and lead productive lives. In order to achieve this goal, several issues need to be addressed, such as education of survivors and healthcare providers regarding the potential late effects; provision of standardized guidelines for appropriate follow-up of the survivors in a setting that is feasible and practical for the cancer survivor; ongoing communication between the cancer center that provided acute care for the patient and the healthcare facility providing follow-up care. Several challenges remain in addressing these issues, and will be the focus of this article.     

Right atrial thrombosis associated with central venous catheters in children with cancer

Right atrial thrombosis (RAT) is infrequently diagnosed in children with cancer. Once RAT is documented, medical fibrinolysis or surgical thrombectomy is recommended. A RAT was documented in a child with lymphoma and was successfully lysed with recombinant tissue-type plasminogen activator. The case is presented and therapeutic options reviewed.