Of course, in "Puelto Lico" (being a US Possession) there are flight schools with FAA curriculum.
Otherwise, you might be able to find in some countries the-odd US CFI holder who can give you a Flight Review. I would suspect that (in Central America) there may be one or two in countries like Guatemala, Costa Rica and Panama.
Probably best to check the FAA Airman Register (assuming the guys updated their addresses).