Neoatherosclerosis: Coronary stents seal atherosclerotic lesions but result in making a new problem of atherosclerosis

Table 1 Summary of each type of stent

Stent type	BMS	First-generation DES	Second-generation DES	BRS
Strut thickness	Thick	Thick	Thin	Thick
Incorporated drug	None	Rapamycin derivatives/paclitaxel	Rapamycin derivatives	None/rapamaycin derivatives
Polymer	None	Durable	Durable/biodegradable	None/biodegradable
Inflammation	Not available Foreign-body inflammatory reaction[33]	Strong	Slightly	Slightly[65]
Onset of neoathero- sclerosis	After 4 yr[39]	SES 70 d[42] PES 120 d[42]	CoCr EES 270 d[42]	Not available

Data modified from Inoue et al[33], Nakazawa et al[39], Otsuka et al[65]. DES: Drug-eluting stent; BRS: Bio-resorbable scaffold; SES: Sirolimus-eluting stent; PES: Paclitaxel-eluting stent.