Blue naevus with satellitosis mimicking malignant melanoma

Blue naevus is an acquired benign melanocytic naevus. It is a firm, sharply defined dark blue to grey–black papule or nodule, which is likely to arise from the arrested dermal melanocytes in the dermis. In the last few years, blue naevus has attracted much attention due to the recognition of new ent...

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Bibliographic Details
Published in:Journal of the European Academy of Dermatology and Venereology 2001-11, Vol.15 (6), p.570-573
Main Authors: Sahin, MT, Demir, MA, Yoleri, L, Can, M, Öztürkcan, S
Format: Article
Language:English
Subjects:
Aged
Biopsy, Needle
blue naevus
Diagnosis, Differential
Humans
Immunohistochemistry
Male
malignant melanoma
Melanoma - diagnosis
Melanoma - pathology
Melanoma - surgery
Nevus, Blue - diagnosis
Nevus, Blue - pathology
Nevus, Blue - surgery
Prognosis
satellitosis
Scalp Dermatoses - diagnosis
Skin Neoplasms - diagnosis
Skin Neoplasms - pathology
Skin Neoplasms - surgery
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Summary:Blue naevus is an acquired benign melanocytic naevus. It is a firm, sharply defined dark blue to grey–black papule or nodule, which is likely to arise from the arrested dermal melanocytes in the dermis. In the last few years, blue naevus has attracted much attention due to the recognition of new entities and to its confusion with malignant melanoma. We report a 69‐year‐old man who developed a blue–black nodular lesion with satellitosis on his scalp. Although clinically it was thought to be a malignant melanoma, histopathological investigation and conservative methods such as dermatoscopy and power Doppler ultrasonography did not confirm this diagnosis. Histopathological examination excluded malignant melanoma, as there were no cellular atypia and mitotic activity in either the nodular lesion or the satellitosis. Doppler ultrasonography confirmed the benign nature of the lesion. Dermatoscopic examination showed homogeneous steel‐blue pigmentation with individual blue globules, dots and some brown veils, and confirmed the histopathological diagnosis. To the best of our knowledge, our case is the third reported case of a blue naevus with satellitosis mimicking malignant melanoma.
ISSN:0926-9959
1468-3083
DOI:10.1046/j.1468-3083.2001.00324.x