Atypical cellular blue nevus or malignant blue nevus?*
نویسندگان
چکیده
Blue nevus is a benign melanocytic lesion whose most frequent variants are dendritic (common) blue nevus and cellular blue nevus. Atypical cellular blue nevus presents an intermediate histopathology between the typical and a rare variant of malignant blue nevus/melanoma arising in a cellular blue nevus. An 8-year-old child presented a pigmented lesion in the buttock since birth, but with progressive growth in the last two years. After surgical excision, histopathological examination revealed atypical cellular blue nevus. Presence of mitoses, ulceration, infiltration, cytological atypia or necrosis may occur in atypical cellular blue nevus, making it difficult to differentiate it from melanoma. The growth of blue nevus is unusual and considered of high-risk for malignancy, being an indicator for complete resection and periodic follow-up of these patients.
منابع مشابه
Meningeal melanomas associated with transforming Ota nevus to malignant melanoma: a case report
Absract Intracranial invasion of cellular blue nevus (CBN) from the skin is extremely rare and such a condition with malignant transformation is even rarer. A case of meningeal melanoma with malignant transformation which was derived from an Ota nevus is presented in this report. A21-year-old man with a neurocutaneous syndrome since childhood was referred with headache and mild le...
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