Left-Hemispheric Hydranencephaly With Less Favorable Findings

To the Editor.— We read with great interest the recent article by Ulmer et al1 regarding a child with left-hemispheric hydranencephaly (only the eighth reported case of hemihydranencephaly1–8) who remarkably had a nearly normal life with only mild hemiparesis and no cognitive deficits despite lacking a left cerebral hemisphere. We want to note here the ninth reported case of hemihydranencephaly, also in a patient with left-hemispheric hydranencephaly; unfortunately, it seems that our patient will likely not have as good an outcome as that of the patient described by Ulmer et al. We have been following a young male child who was born at term. …