Abstract
The term “melanoma incognito” refers to a clinically false-negative melanoma mimicking a benign lesion, such as harmless hemangioma, seborrheic keratosis, common intradermal nevus, or even an inflammatory lesion. It has been called also “featureless melanoma” to emphasize that clinical examination does not allow to reach a correct diagnosis as this rare type of melanoma does not exhibit a sufficient array of clinical features to justify biopsy. Interestingly, when biopsied, such cases do not cause difficulties in dermatopathological diagnosis, being usually histologically clear-cut melanomas, superficial spreading, nevoid, or even spitzoid.
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Longo, C., Argenziano, G., Lallas, A., Moscarella, E., Piana, S. (2018). Melanoma Incognito. In: Atlas of Diagnostically Challenging Melanocytic Neoplasms. Springer, Cham. https://doi.org/10.1007/978-3-319-48653-6_8
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