MELANOMA ARISING DE-NOVO IN CHILDHOOD - EXPERIENCE OF THE GUSTAVE-ROUSSY INSTITUTE

Between January 1956 and December 1990, 17 patients younger than 17 years with available pathological screens of de novo cutaneous melanoma, and with no other risk factors (xeroderma pigmentosum, giant congenital naevi, congenital melanoma or a proven family history of dysplastic naevus syndrome) were seen at the Gustave-Roussy Institute, The median age was 9 years and 9 months (range 2 years and 3 months-16 years and 9 months), The primary disease was located in the lower extremities in 10 cases, the trunk in five cases, and the upper extremities or head and neck in one case. The disease was localized for 10 patients at presentation (stage I), six had proven nodal metastasis (stage II) and one patient had nodal and breast metastases. The median thickness of the primary lesion was 2.89 mm (range 0.64-10). Five tumours were at level III on Clark's index, eight at level IV and four at level V. Six cases were classified as superficial spreading, two as unclassified radial growth, three nodular, three with Spitzoid cells, and three were unclassified, Two patients presented local recurrence with an initial unclassified melanoma, with a thickness greater than 2.5 mm, At a median follow-up time of 7 years, two patients had died from recurrent disease, and one patient had died from a second malignancy.