Stroke bite lesion are seen in –
**Core Concept**
Stroke bite lesions, also known as "stroke bites," are a type of cerebral infarction that occurs due to the occlusion of small penetrating arteries in the brain. These lesions are typically seen in the setting of hypertension, diabetes, or other vascular risk factors.
**Why the Correct Answer is Right**
The pathophysiology of stroke bite lesions involves the occlusion of small, end-arterial branches that supply the deep structures of the brain, such as the basal ganglia, thalamus, and internal capsule. This leads to a localized area of ischemia, resulting in cell death and the characteristic "stroke bite" appearance on imaging. The most common cause of stroke bite lesions is the occlusion of the lenticulostriate arteries, which arise from the middle cerebral artery.
**Why Each Wrong Option is Incorrect**
**Option A:** is incorrect because it does not specify the correct location or pathophysiology of stroke bite lesions.
**Option B:** is incorrect because it refers to a different type of cerebral infarction, typically associated with large vessel occlusion.
**Option C:** is incorrect because it does not accurately describe the pathophysiology of stroke bite lesions.
**Clinical Pearl / High-Yield Fact**
Stroke bite lesions are a classic example of a "small vessel disease," which is a common cause of cerebral infarction in patients with hypertension, diabetes, or other vascular risk factors.
**Correct Answer: C. Cerebral amyloid angiopathy.**