Table 1.

Mast cell density (cells/mm²) by location and disease state

	Control	Remission	Active	p value
Epithelium	9 (mean)	22	124	p < 0.0001
	10 (median)	8	104
	0–25 (range)	1–155	9–409
n	21	20	36
Patients	20	20	34
Papillae	536	291	125	p < 0.0001
	591	301	79
	0–1,386	0–601	0–737
n	19	18	35
Patients	18	18	33
LP	123	68	49	p = 0.0069
	81	59	33
	22–269	33–132	6–294
n	6	14	20
Patients	5	14	18

Active, active eosinophilic esophagitis; Control, non-eosinophilic esophagitis; LP, lamina propria; n, number of biopsy sections; Remission, eosinophilic esophagitis in remission.

Kruskal-Wallis test used for calculation of p value.