Baylor College of Medicine cases:

I refer to this site sometime when I get bored with the usual and they have some pretty good neurology cases with complete differential diagnosis, discussion and references.
This months case seems a bit dicey and am not even too sure if this is a dyed in wool neurology case or a case of edema in the lower extremities caused by too much of sedentary activities (the patient is a computer programmer)...
Read on more about this case here. They will post the diagnosis over the month end.