On Mon, 3 May 1999 11:51:55 -0500, you wrote: > The radiologist *calls* me with a concern about >possible skull fracture with formation of a leptomeningeal cyst but he's >hedging the whole time on the phone and I just don't know what to make of >the reading. Seems like to me that it's an *awfully* big cyst if it is >one. Anyone have experience with leptomeningeal cysts? I've never seen >one... Can't decide if I should freak the mother out and proceed with the >CT or not. > LM cysts develop through a non-healed prior skull fracture secondary to normal intracranial pressure and require surgical repair. A CT scan is definitely warranted to be certain of the dx. Then I would be concerned re: possible abuse unless a prior fall is known. An LM cyst can take several months to develop. Perhaps skeletal xrays are warranted. P Prescott, MD