Journal
KLINISCHE PADIATRIE
Volume 229, Issue 6, Pages 322-328Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0043-118662
Keywords
malignant melanoma; rare pediatric tumors; pediatric oncology; German Rare Pediatric Tumor Registry; orphan disease; STEP Registry
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Funding
- German Childhood Cancer Foundation
- Madeleine Schickedanz Foundation
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Background Malignant melanoma (MM) is a common malignancy in adults while it is rare in children. Thus, information on clinical behavior of pediatric MM is incomplete. Patients The German Pediatric Rare Tumor Registry (STEP) presents a prospective analysis of 60 childhood MM cases diagnosed between June 2006 and December 2014. Method Patients' ages ranged between 0 and 17 years at initial diagnosis (median age 9.6 years). Information on patient's and tumor characteristics was obtained by standardized documentation. Three-year overall survival (OS) and event-free survival (EFS) were estimated by the Kaplan-Meier test. Results Follow-up ranged from 0 to 116 months with a median of 36.5 months, however, univariate analysis was performed for 46 cases with a follow-up > 3 months, only. Cases with spitzoid histotype (40%) did not show a significantly different outcome compared to cases with non-spitzoid MM. Breslow thickness 2.00mm was identified in 30% of the cases and 18% were Clark level I to III. Adjuvant therapy was used in 45% of cases. OS at 3 years was 100%, EFS 95.2%. Conclusion We present a series of cases with a high number of spitzoid malignant melanoma and advanced pediatric melanoma, but surprisingly good overall survival rates. Spitzoid and non-spitzoid MM do not differ in clinical behavior and survival.
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