Thank you for the prayers and well wishes, folks.

Latest news is that the seizure does not appear to have been caused by a stroke but rather by a "mass"/tumor. Whether the mass is pressing on the brain or actually is on/part of the brain my dad was unclear. From what my parents related to me, though an operation is necessary it seems the doctor did not feel there was any need to go into "panic mode". My mom had sort of hoped to wait until after Easter to have the operation done, but the doctor actually has an opening in his schedule on Friday so she decided not to wait.