I have published a nice e-book on scrotal calculi.
It is actually an ultrasound atlas of high resolution images of calcifications/ scrotal pearls.
Check this link: https://www.regnow.com/softsell/nph-softsell.cgi?item=16637-4
This e-book is in MS Power Point format...
In case you wish to get the e-book in PDF format gp to this link:
All you need to open this e-book on scrotal calculi in PDF format is adobe reader (a free download from www.adobe.com