Do not mind the dots above her shoulders, I solved that problem

The lights are on the right and above, no left except natural reflection on the wall

if I add a little light on the left the problem goes away, but then the scene is no longer consistent.

you have any ideas ?

thanks.

I dont see anything wrong with the pic without knowing exactly where the lights are.

You could use a light as a fill without shadows if you prefer that.

Are you using any ambiant occlusion ?

No, i use GC and IDL so no AO

in my renderings.

IDL automatically adds AO. In fact, if you use D3D's Render Settings to set the IDL level, it applies the same amount of AO regardless of the level setting.

Are you sure that with indirect light poser automatically add AO ?

This may be my problem in rendering above ?

9/10 chance it's a baked in shadow on the lower part of the breast. Did you have a look at the color map?

Almost every map I look at has lighting baked into the breast there, and this causes grief in an otherwise accurate 3D simulation.

The correct, scientific term is "boobshadow", as in: "I would have bought that character pack, were it not for the textures suffering from obvious boobshadow."

Not to be confused with the similar problems of "buttshadow" and "noseshadow". Oddly enough, I'm not anywhere near as annoyed by "earshadow", although it is also bad practice.

Have you checked the bump map?  It looks like you have a really high bump map setting.