F-FDG PET/CT Imaging in an Unusual Case of Cutaneous Melanoma Arising From Congenital Melanocytic Nevus in a Two year-old Girl/Iki Yasindaki Bir Kiz Cocugunda Konjenital Melanositik Nevusten Kaynaklanan Nadir Bir Kutanoz Melanom Olgusunda [.sup.18]F-FDG PET/BT Goruntuleme

Childhood malignant melanoma (MM) is extremely uncommon. We report an unusual case of cutaneous melanoma that developed from a medium-sized congenital melanocytic nevus (CMN) in a two-year-old girl. The patient had a history of CMN on the right hip, and she presented with a new ulcerative area with irregular borders and bleeding on CMN. Histopathological examination of the nevus revealed a MM. [.sup.18]Florfluorodeoxyglucose ([.sup.18]F-FDG) positron emission tomography/computed tomography was performed for metastatic evaluation. The scan demonstrated metastatic increased [.sup.18]F-FDG uptake in the right external iliac and inguinal lymph nodes. Keywords: [.sup.18]F-FDG PET/CT, childhood, cutaneous melanoma, congenital melanocytic nevus Cocukluk cagi malign melanomu (MM) oldukca nadirdir. Iki yasinda bir kiz cocugunda orta buyuklukte konjenital melanositik nevusten (KMN) gelisen nadir bir kutanoz melanom olgusunu sunduk. Sag kalcada KMN oykusu olan hasta, KMN uzerinde duzensiz sinirli ve kanamali yeni bir ulseratif alan ile basvurdu. Nevusun histopatolojik incelemesi MM gosterdi. Metastatik degerlendirme icin, 18flor-florodeoksiglukoz ([.sup.18]F-FDG) pozitron emisyon tomografi/bilgisayarli tomografi goruntume yapildi. Goruntuleme sag ekternal iliak ve inguinal lenf nodlarinda metastatik artmis [.sup.18]F-FDG tutulumunu gosterdi. Anahtar Kelimeler: [.sup.18]F-FDG PET/BT, cocukluk cagi, kutanoz melanoma, kongenital melanositik nevus