. 2022 Sep 20;93(2):357–370. doi: 10.1002/ana.26497

TABLE 3.

Lateralization Concordance of cSS, Symptomatogenic Zone, Epileptiform Activity on Electroencephalography, and Hyperperfusion on Single‐Photon Emission Computed Tomography

Clinical and imaging features	cSS location ^a
Clinical and imaging features	Right (n = 55)	Left (n = 48)	Lateralization concordance
Symptomatogenic zone (convulsion dominant)	23/28 (82.1%)	17/22 (77.3%)	40/50 (80.0%)
Epileptiform activity on EEG	11/14 (78.6%)	11/13 (84.6%)	22/27 (81.5%)
Hyperperfusion on SPECT	20/24 (83.3%)	14/15 (93.3%)	34/39 (87.2%)

^{^a}

Of 88 post‐stroke epilepsy cases of cSS, 15 had bilateral cSS.

cSS = cortical superficial siderosis; EEG = electroencephalography; SPECT = single‐photon emission computed tomography.