This term was popularized in 1980 after a report delineating 4 clinical syndromes associated with ICH in each of the cerebral lobes16 (occipital, temporal, frontal, and parietal) as in contrast to hemorrhage of deep structures (e.g. basal ganglion, thalamus, and infratentorial structures).16 Accounts for 10–32% of nontraumatic ICHs.16 With large hemorrhages, it may be difficult to distinguish between lobar and deep ICH.
Lobar hemorrhages are more likely to be associated with structural abnormalities than deep hemorrhages (see below). They may also be more common in patients with high alcohol consumption (see above). Lobar hemorrhages may also have a more benign outcome than ganglionic-thalamic hemorrhages.16
cerebral amyloid angiopathy: the most common cause of lobar ICH in elderly normotensive patients
hemorrhagic tumor. Multiple lobar hemorrhages may occur with metastases