sub arachnoid cyst

MY SON IS 14. HE HAD A CT OF THE HEAD DONE IN THE ER DUE TO HEADACHES. THE DIAGNOSED HIM WITH A SUB ARACHNOID CYST ON THE RIGHT SIDE OF HIS HEAD ABOVE THE EAR AREA. THEY TOLD ME MORE THAN LIKELY IT WAS A BIRTH DEFECT AND REFERRED US TO A NUERO, WHICH WE SEE IN 2 WEEKS. MY QUESTION IS COULD THIS CYST BE CAUSED BY FORCEP AND VACUUM SUCTION DURING CHILDBIRTH?

[Michael Lim, MD]

In general, subarachnoid cysts are more congenital and not caused by forceps and vacuum suction.  I would refer the question to your doctor who knows your sons case.