Malignant melanoma in situ associated with underlying sarcoidal granuloma: A histopathological mimicker of invasive epithelioid melanoma cells

Malignant melanoma is known to show diverse cellular morphologies, including a histiocyte‐like morphology. Therefore, many non‐melanocytic proliferations or infiltrates can mimic melanoma, and be confusing especially when they coexist with a true melanoma. Herein, we report an unusual case of a melanoma in situ with an underlying sarcoidal granuloma, which mimicked dermal invasion of melanoma. This case expands insight into non‐neoplastic lesions closely mimicking melanoma.