Can persons mood and behaviors still be effected 10 years after a right frontal brain injury?

Yes: Frontal lobe syndrome produces long term complications with mood, attention, and behavior. The famous case of phineus gage described a worker who had a tamping rod explode through his frontal lobes. He survived in good health but could not return to work due to mood and lack of motivation.

Yes: Newer information and imaging studies with MRI scans is revealing that there are often areas of injury globally in the brain. Thus even though the right frontal brain was the main area of concern, there are very likely other small satellites of injury in other regions of the brain that may affect mood and behaviors.