Following are seen in CRA occlusion except –
**Core Concept**
CRA (Cerebral Artery) occlusion refers to the blockage of the internal carotid artery or its main branches, leading to cerebral ischemia and potential stroke. The clinical manifestations and imaging findings in CRA occlusion can vary depending on the location and extent of the occlusion.
**Why the Correct Answer is Right**
In CRA occlusion, patients typically present with contralateral hemiparesis or hemiplegia, facial weakness, and sensory deficits. Other common findings include aphasia (in left-sided lesions), visual field defects, and decreased level of consciousness. The occlusion may also lead to ipsilateral pupillary dilation, due to the loss of parasympathetic input from the oculomotor nerve.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to CRA occlusion.
**Option B:** This option is not a characteristic finding in CRA occlusion.
**Option C:** This option is incorrect because CRA occlusion typically presents with contralateral symptoms, not bilateral.
**Clinical Pearl / High-Yield Fact**
In CRA occlusion, the "locked-in syndrome" can occur, characterized by quadriparesis with preservation of eye movements, due to the involvement of the pons and midbrain.
**Correct Answer: C. This option is incorrect because CRA occlusion typically presents with contralateral symptoms, not bilateral.**