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Table 1: Parry-Romberg syndrome patient characteristics^{^a}
Variables 
Total 80
Age at work-up and imaging (yr) 37 (26–56)
Age at hemifacial atrophy identification (yr) 20 (13–43)
Sex 
    Male 24 (30%)
    Female 56 (70%)
Laterality of hemifacial atrophy 
    Right 37 (46%)
    Left 43 (54%)
    Bilateral 0 (0%)
Brain abnormalities on MR imaging 
    Normal 32 (40%)
    Abnormal 48 (60%)
Overall laterality of brain MR imaging findings 
    Unilateral 34 (42%)
    Bilateral 14 (17%)
Laterality of unilateral brain MR imaging findings in relation to hemifacial atrophy 
    Ipsilateral 26 (35%)
    Contralateral 6 (7%)
Epilepsy 
    Present 16 (20%)
    Absent 64 (80%)
↵a Data are No. (%) or median (IQR, 1–3).

Variables
Total	80
Age at work-up and imaging (yr)	37 (26–56)
Age at hemifacial atrophy identification (yr)	20 (13–43)
Sex
Male	24 (30%)
Female	56 (70%)
Laterality of hemifacial atrophy
Right	37 (46%)
Left	43 (54%)
Bilateral	0 (0%)
Brain abnormalities on MR imaging
Normal	32 (40%)
Abnormal	48 (60%)
Overall laterality of brain MR imaging findings
Unilateral	34 (42%)
Bilateral	14 (17%)
Laterality of unilateral brain MR imaging findings in relation to hemifacial atrophy
Ipsilateral	26 (35%)
Contralateral	6 (7%)
Epilepsy
Present	16 (20%)
Absent	64 (80%)