NCIt synonyms : Skin Spitz Melanocytoma; Skin Melanocytic Tumor of Unknown Malignant Potential; Skin Spitzoid Tumor of Uncertain Malignant Potential; STUMP; Skin Atypical Spitz Tumor of Uncertain Malignant Potential; Skin Atypical Spitz Tumor; Skin Pagetoid Spitz Nevus; Skin Atypical Spitz Nevus; AST; Skin Spitz Tumor with One or More Atypical Features;
NCIt definition : A junctional or compound cutaneous melanocytic neoplasm not fulfilling the histopathologic
criteria of melanoma but with one of the following features: asymmetry, predominance
of single melanocytes over nests in lesions 4 mm or larger, ulceration, large dermal
sheets of melanocytes, lack of maturation in dermis, deep dermal mitotic figures,
extensive involvement of subcutis, and nuclear pleomorphism. (Mod Pathol 2006;19:
S21);