Digital BW, The Print

I am working with 30 some-odd 5400 dpi scans of Ilford Pan F film.

I'd expect the resulting images to be virtually grainless.This is evident onscreen and in a print.

But in some images shadow areas are particularly grainy. I dunno maybe it's that nasty grain aliasing affect that I read about some scanning doing. The grain manifests itself in a pattern of speckly white dots.

I really don't want to rescan the image but I can if necessary return to the original scanned image file. What I hope to learn via this post is if there are any PS techniques that can be used to hide this in selected areas.

I have tried selective noise reduction using the Photoshop filter and Noise Ninja without limited success.

Dave.