![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjAFL_syobyfjITjr42Gc7S2USnkZ6bzcTtQl_oN9DKgGtroW9FrWmV7lUAYTy9FUcqQ_y6enWhbivR2mpWgm96-mLM_4vWRJ3n2vhEWt-cb5CYHiaOw48u7OKHHSGpiLdEmXbhaujyU9Y/s400/BS1.jpg)
A 73-year old woman consulted for this ulcerated tumor of her forehead. The main clinical diagnosis was a basal cell carcinoma.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDs_h5Vx4vJ-zHSRRZAfgIPNkrag-VYUvaZ3ZBPx_slHaj-w7YiYx6MfXclbo0gBiDoNaN3tfQ1gBcHZSDixBKGXoM_XHoPhvPE4agg-YOhP9rB9I0GA-R0eNRLzDCqmktWffAN_RqjY0/s400/BS2.jpg)
Dermoscopy confirmed easily the diagnosis, showing ulceration and many blue ovoïd nests.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhwDFXc4uCQlFjxa-dtrg_csyxsbK1S8Td6RWbv-xErPmEm7xUEXfBgwxsooPWQw5COGP73W5G_79OLML4Wcn1oLJX73LcIBTw_YZLEcmxijfFYsN4ls5cQQtJZKD4v07ssBVZWLHYPWEI/s400/BS3.jpg)
Blue ovoïd nests (or blue-gray ovoïd nests) are well circumscribed areas, larger than blue-gray globules and often associate. Their presence is a good dermoscopic sign for a basal cell carcinoma.