2F72.1 Spitzoid tumour of uncertain malignant potential

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01

A spindle cell and epithelioid cell melanocytic neoplasm in which there are sufficient features distinguishing it from a benign Spitz naevus to cast doubt on its benign nature. These atypical features include development in adult life, asymmetry, large diameter (>6 and especially >10 mm), significant thickness (particularly subcutaneous extension), lack of “maturation” and nodule formation, cytological atypia and a high mitotic rate.

postcoordination

synonyms

• Spitzoid tumour of uncertain malignant potential
• STUMP - [Spitzoid tumour of uncertain malignant potential]
• Atypical Spitz naevus
• atypical Spitz tumour
• atypical Spitz tumour of uncertain malignant potential

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