This melanocytic proliferation belongs to the “gray zone” because dermoscopic as well as histopathologic criteria for the diagnosis of Clark nevus and melanoma in situ are both present.
Dermoscopically the diagnosis of this melanocytic proliferation is suggestive of melanoma, albeit different histopathologists came to different diagnostic conclusions. Therefore we interpreted this lesion as belonging to the “gray zone”.
This melanocytic proliferation reveals dermoscopic and histopathologic criteria for both Clark nevus and melanoma in situ. Thus we categorized this lesion within the “gray zone”.
Dermoscopically this melanocytic proliferation with peripheral hyperpigmentation due to an atypical pigment network is suggestive of melanoma in situ. However, the histopathologic diagnosis performed by different histopathologists was equivocal.
This melanocytic proliferation has many features of melanoma in situ. However, the diagnosis of melanoma in situ has not been confirmed by all the histopathologists studying this case.