Contemporary enteral and parenteral nutrition before surgery for gastrointestinal cancers: a literature review

Table 2 The comparison of PN and EN in preoperative therapy

	PN	EN
Advantages	Easiness	Impact on the immune system
	Speed	Physiological way of delivery
	Efficiency	Safety
Disadvantages	Lack of recommendations	Therapy time, less calorific value
	High costs	Organisational
	Complications	Complications

ISSN: 1477-7819