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  • Title: Characteristics and management of ganglioneuroma and ganglioneuroblastoma-intermixed in children and adolescents.
    Author: Alexander N, Sullivan K, Shaikh F, Irwin MS.
    Journal: Pediatr Blood Cancer; 2018 May; 65(5):e26964. PubMed ID: 29369484.
    Abstract:
    BACKGROUND: Ganglioneuromas (GNs) usually demonstrate favorable histological and clinical features. Surgery is often performed due to clinical symptoms and/or theoretical concerns that GN may transform into neuroblastoma (NB); however, several studies have identified significant GN-surgical morbidities. OBJECTIVES: We compared the natural history, biological and clinical features of GN and ganglioneuroblastoma-intermixed (GNB-I) managed by surgery or observation to inform management and surveillance. PROCEDURES: This retrospective study includes patients (n = 67) with histological diagnosis of GN (50/67) and GNB-I (17/67) at the Hospital for Sick Children between 1990 and 2014. Clinical, pathological features, tumor dimensions, and management were recorded. RESULTS: Median age and maximal tumor diameter were 6 years (1.3-17.8) and 6.3 cm (1.4-16.9), respectively. Of the 67 patients, 46 (69%) had upfront surgery and 21 (31%) were observed. Of the 21 observed patients 4 later underwent resection. There were post-operative complications in 15 of the 50 (30%) surgical patients. The presence of imaging-defined risk factors correlated with complications (P = 0.005). Observed patients were older (median 8.4 vs. 5.3 years) and diagnosed more recently. Median growth was 0.3 cm/year and 6 of 21 had progressive disease (PD). At median follow-up of 2.2 years (0.2-14.3), all patients were alive and for those with evaluable imaging there were 27 complete and 10 partial responses, 19 stable and 6 PD. Pathology classification changed at resection for three cases, but no GN was reclassified to NB. CONCLUSIONS: GN and GNB-I have a slow growth rate and resection can be associated with significant morbidity. Watch and wait approaches should be considered for some GN and GNB-I.
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