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A Journal on Dermatology

Journal of Istituto Dermatologico San Gallicano
Official Journal of the Associazione Dermatologi Ospedalieri Italiani - A.D.O.I.
Indexed/Abstracted in: EMBASE, Scopus



Esperienze Dermatologiche 2010 June;12(2):83-7

language: English, Italian

Agminated blue nevus: an unusual case

Corradin M. T. 1, Forcione M. 1, Giulioni E. 1, Fiorentino R. 2

1 Unità Operativa di Dermatologia, Azienda Ospedaliera Santa Maria degli Angeli, Pordenone,, Italia
2 Unità Operativa di Anatomia Patologica, Azienda Ospedaliera Santa Maria degli Angeli, Pordenone, Italia


Blue nevus, a benign melanocytic neoplasm of the derma with a predilection for the acral surfaces (dorsum of the hands and feet, buttocks, face), often occurs as a solitary lesion. Solitary blue nevus arising in a circumscribed area is referred to as plaque-like blue nevus or agminated blue nevus, a variant rarely described in the literature. Here we report the case of a 33-year-old woman who presented because of a small punctate non tender lesion on the extensor aspect of the right arm. The lesion had been stable for several years until recently when the patient noticed it had rapidly grown in size and demonstrated atypical dermoscopic features. The nevus was completely excised. Histological findings were consistent with agminated blue nevus. Agminated blue nevus is a melanocytic nevus; owing to its rarity, its natural history is not yet well known and a definitive prognosis cannot be made. Lesions not removed or biopsied should be regularly monitored for changes in appearance.

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