“Pile of plates” appearance on angiography suggests diagnosis of
**Core Concept**
The "pile of plates" appearance on angiography refers to a characteristic radiographic pattern seen in the diagnosis of a specific vascular condition. This pattern is caused by the abnormal formation of blood vessels, leading to a distinctive angiographic appearance.
**Why the Correct Answer is Right**
The "pile of plates" appearance is typically associated with **Klippel-Trenaunay-Weber syndrome (KTWS)**, a rare congenital disorder characterized by the abnormal formation of blood vessels, leading to vascular malformations. The angiographic appearance of KTWS is due to the presence of multiple small, dilated blood vessels that resemble a "pile of plates." This is caused by the abnormal proliferation of endothelial cells and the formation of new blood vessels, leading to a characteristic angiographic pattern.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not describe a vascular condition that is associated with the "pile of plates" appearance on angiography.
**Option B:** This option is incorrect because it is a different vascular condition that is characterized by a different angiographic appearance.
**Option C:** This option is incorrect because it is not a vascular condition that is associated with the "pile of plates" appearance on angiography.
**Clinical Pearl / High-Yield Fact**
The "pile of plates" appearance on angiography is a key diagnostic feature of Klippel-Trenaunay-Weber syndrome, and it is essential to recognize this pattern to make an accurate diagnosis. This condition requires a high index of suspicion, and a thorough understanding of its angiographic appearance is crucial for diagnosis.
**Correct Answer:** C.