**Papilloedema Core Concept**
Papilloedema refers to the swelling of the optic disc due to increased intracranial pressure (ICP), leading to a characteristic clinical presentation. This condition is often associated with various underlying pathologies, including tumors, infections, and vascular disorders.

**Why the Correct Answer is Right**
Papilloedema is characterized by swelling of the optic disc, which results from the transmission of increased ICP to the optic nerve head. The increased pressure causes distension of the optic disc's blood vessels, leading to a characteristic appearance on fundoscopic examination. The swelling of the optic disc is due to the compression of the optic nerve axons and the accumulation of fluid in the retrolaminar optic nerve tissue.

**Why Each Wrong Option is Incorrect**
**Option A:**
* This option is incorrect because papilloedema is indeed associated with a loss of the cup-disc ratio, which is a hallmark of this condition.

**Option B:**
* This option is incorrect because optic disc pallor is a feature of optic atrophy, not papilloedema.

**Option C:**
* This option is incorrect because hemorrhages in the optic disc are not a characteristic feature of papilloedema.

**Clinical Pearl / High-Yield Fact**
It is essential to distinguish papilloedema from other causes of optic disc swelling, such as optic neuritis, which often presents with pain on eye movement and a more rapid progression of symptoms.

**Correct Answer: B. Optic disc pallor is a feature of optic atrophy, not papilloedema.**