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. 2019 Aug;181(2):366-372.
doi: 10.1111/bjd.17450. Epub 2019 Feb 10.

Clinical features and outcomes of spitzoid proliferations in children and adolescents

Affiliations

Clinical features and outcomes of spitzoid proliferations in children and adolescents

D W Bartenstein et al. Br J Dermatol. 2019 Aug.

Abstract

Background: Spitzoid proliferations range from Spitz naevi to melanomas. There are few studies describing clinical features and outcomes in the paediatric population.

Objectives: To determine the clinical features and outcomes of a large paediatric cohort with histopathologically confirmed Spitz tumours.

Methods: This was a retrospective cohort study of patients seen at Boston Children's Hospital who were aged < 20 years and had a histopathological diagnosis of spitzoid proliferation from 1 January 1994 to 23 October 2012.

Results: In total 595 patients with 622 spitzoid proliferations were identified (median age 7·4 years, interquartile range 4·6-11·7). Overall 512 proliferations (82·3%) were typical, 107 (17·2.%) were atypical and three (0·5%) were melanomas. The median ages at biopsy were 7·4, 7·2 and 17·2 years, respectively, and there was a significant difference in age at biopsy for patients with typical or atypical proliferations vs. melanoma (P < 0·01). Among samples with positive margins (n = 153), 55% (54 of 98) of typical proliferations, 77% (41 of 53) of atypical proliferations and 100% (two of two) of melanomas were re-excised. Six patients had sentinel lymph node biopsy performed, with three patients demonstrating nodes positive for melanocytic cells. Within a median follow-up of 4·1 years for the full cohort there were no related deaths.

Conclusions: Spitz tumours have strikingly benign outcomes in the paediatric population, although this study is limited by the low number of melanomas and restriction to a single paediatric institution. Aggressive management recommendations should be reconsidered for children and adolescents with banal-appearing Spitz naevi, based on the clinically indolent behaviour in this cohort.

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Conflict of interest statement

EBH discloses non-relevant conflicts of interests: UpToDate, Inc (author, contributor), Foundation Medicine, Inc (stock), and Gritstone Oncology, Inc (spouse employment, stock).

Figures

Figure 1.
Figure 1.
Clinical, dermosocopic, pathologic, and genomic features of Spitzoid proliferations.

Comment in

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