Final answer:
An aneurysm may cause bleeding and fluid buildup in surrounding tissues, making embalming difficult.
Step-by-step explanation:
An aneurysm may prove troublesome in embalming because it can lead to bleeding and the leakage of blood into surrounding tissues, which can complicate the embalming process. The pressure from the aneurysm can cause the blood vessels to rupture, resulting in additional fluid buildup in the area. This can make it challenging to properly drain and preserve the body during embalming.