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. 2010 Sep 15;116(18):4334-44.
doi: 10.1002/cncr.25222.

Prognostic factors for melanoma in children and adolescents: a clinicopathologic, single-center study of 137 Patients

Sabela Paradela  1 , Eduardo Fonseca, Salvador Pita-Fernández, Sara M Kantrow, Abdul H Diwan, Cynthia Herzog, Victor G Prieto
Affiliations
Free article

Prognostic factors for melanoma in children and adolescents: a clinicopathologic, single-center study of 137 Patients

Sabela Paradela et al. Cancer. .
Free article

Abstract

Background: Cutaneous melanoma in childhood is rare; therefore, its prognostic factors and biologic behavior and the effectiveness of adjuvant diagnostic techniques in this group remain mostly unknown.

Methods: The authors conducted a retrospective, observational study on the prognostic significance of clinical and pathologic findings from 137 cutaneous and mucosal melanomas in patients aged <18 years that were reviewed by the pathology department of a large cancer center during the period from 1992 to 2006.

Results: Univariate analysis indicated that there was a significantly greater risk of metastases for patients who had previous nonmelanocytic malignancies, nodular histologic type, fusiform or spitzoid cytology, high Breslow thickness, vertical growth phase, high dermal mitotic activity, ulceration, and vascular invasion. Adjacent nevus and radial growth phase were associated with a better prognosis. Twelve patients (10.3%) died during follow-up. Decreased overall survival was related significantly to age >10 years, previous nonmelanocytic malignancy, high Breslow thickness, high Clark level, and the presence of metastases at diagnosis. All patients who died were aged ≥ 11 years, and 8 of those patients had metastases at diagnosis. In multivariate analysis, higher Breslow thickness predicted an increased risk of metastases, whereas age >10 years and the presence of metastases at diagnosis were associated with decreased survival.

Conclusions: Similar to adults, the detection of metastases at diagnosis in children with melanoma was 1 of the main factors that influenced overall survival. Melanomas that were detected in children aged <11 years appeared to have a less aggressive behavior than those detected in adults.

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