Structural abnormality in left fronto-parietal region in brain is likely to have symptoms in right hand and lips. It is important to know what is the chronic condition that has been identified on CT scan, before giving useful inputs. All the same let me try by explaining few things that may have happened ... If she has suffered trauma in the past, brain damage
may persist as gliosis and leave some neurologic deficit. Same could happen if inflammatory granuloma
like tubercular infection
or parasitic infection
has been treated in the past, but they present more often with seizures. I could better answer if more information on the chronic condition is made available.
Dr Rajesh Kapur