Step 1: Understanding the Concept:
Haemorrhage refers to the escape of blood from the vascular system into the surrounding tissues or cavities, designated by specific terms based on its location and size.
Step 2: Detailed Explanation:
Let us evaluate each term:
- Ecchymosis: A moderate-sized (usually 1 to 2 cm) flat, round, or irregular hemorrhagic spot in the skin or mucous membrane.
- Haematosalpinx: The accumulation of blood within the fallopian tubes (oviducts).
- Haemopericardium: The accumulation of blood within the pericardial sac surrounding the heart.
- Apoplexy (or cerebral apoplexy): A sudden, severe hemorrhage within the brain parenchyma or meninges, often leading to rapid loss of consciousness and neurological deficits (commonly termed a stroke).
Therefore, hemorrhage in the brain is pathologically referred to as apoplexy.
Step 3: Final Answer
The correct option is (D).