Investigation of relationships among gastroesophageal reflux disease subtypes using narrow band imaging magnifying endoscopy

Table 2 Narrow band imaging magnifying endoscopic findings in gastroesophageal reflux disease patients and healthy controls n (%)

NBI magnification findings	HC	GERD
		GERD	NERD	RE	BE
Patients with abnormality	28 (70)	118 (98.3)a	40 (100)	38 (95)	40 (100)
IPCLs increased	8 (20)	94 (78.3)a	32 (80)	32 (80)	30 (75)
IPCLs prolonged	14 (35)	62 (51.7)	24 (60)	18 (45)	20 (50)
IPCLs dilated	8 (20)	34 (28.3)	10 (25)	12 (30)	12 (30)
IPCLs tortuous	0 (0)	2 (1.7)	0 (0)	0 (0)	2 (5)
Microerosions	0 (0)	50 (41.7)a	14 (35)b	24 (60)	12 (30)b
Round pit pattern below SCJ	28 (70)	14 (11.7)	4 (10)	8 (20)	2 (5)
Non-round pit pattern below SCJ	12 (30)	106 (88.3)a	36 (90)	32 (80)	38(95)

^aP < 0.05 vs healthy control;

^bP < 0.05 vs RE patients. NBI: Narrow band imaging; GERD: Gastroesophageal reflux disease; RE: Reflux esophagitis; BE: Barrett's esophagus; NERD: Nonerosive reflux disease; HC: Healthy controls; IPCLs: Intrapapillary capillary loops; SCJ: Squamocolumnar junction.