Does hemorrhoidal artery embolization really benefit patients with hemorrhoids?

Table 2 Advantages and disadvantages of different embolic materials

Embolic materials	Advantages	Disadvantages
Microcoils	Easy to identify under fluoroscopy[37]	Dependent on a normal coagulation status[38]
	Mild adverse reactions[29]	A non-distal embolization[8]
		Slow symptom relief[22]
Particles	Occluding the distal branches[22]	Particulate reflux[38]
	Higher clinical success rates[23]	An increased risk of local ischemic complications[23]
Liquid embolic materials	A high hemostasis effect with a low recurrent bleeding rate[38]	Vascular glue penetration can be difficult to control[38]
		Unwanted retrograde flow or reflux[39]
		Possibility of ischemic complications[26]