Left face, arm, and leg motor and sensory loss with left homonymous hemianopsia and left hemi-neglect. Which stroke territory?

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Localized vascular deficits explain this pattern. A stroke in the right MCA territory—affecting the stem where deep and superficial branches converge—produces contralateral motor and sensory loss affecting the left face, arm, and leg because it disrupts corticospinal and thalamocortical pathways. The same region includes optic radiations, so a left homonymous hemianopsia can occur with MCA involvement. The presence of left hemispatial neglect points to damage in the non-dominant (right) parietal lobe, a hallmark of right-hemisphere strokes. Taken together, the combination of left-sided motor-sensory loss, left neglect, and left visual field loss best localizes to a right MCA stem stroke. Other territories wouldn’t typically explain this exact mix as cohesively (for example, language-dominant left MCA strokes often produce aphasia, and PCA involvement tends to produce prominent visual or memory issues without neglect).