![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWRthECKVcJqns-edS5haye0-Ztib0J6daE1OutRCMrnqw-NzGwjbPqmDcgx78YLgkytOV0GPJJZhCx4E1P_LAcOlGkhoNgsj1cGtqadUYk99tGvjVPvRqmUfGArW0YbWMlmrUSlmJJP0/s400/BDSSM1.jpg)
A 60-year-old man consulted for a changing of color of one of his nevi on his back. The upper part of this nevus turned dark brown a few months before.
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On the upper part of the lesion, dermoscopy revealed an atypical reticular pattern, asymmetric irregular globules and a blotch.
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On the lower part of the lesion, there was an homogeneous non pigmented pattern with some comma vessels in favor of a dermal nevus.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidj46-rUoVB3A_z0hEl-8It932q_IQfO_lDh9h2q7B7iU20uVRZ2lFSL9aBLJQNsEA5862Vaifs7vlpO86c9FpJXulKslXkMTE2aBwW2Fg23ZfYdNz2axkCrzmIsHMgKP4jzrLtiXRNuc/s400/BDSSM4.jpg)
The tumor was excised and pathology revealed a superficial spreading melanoma developed on a pre-existing dermal nevus.
Other cases of melanoma
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