Mechanism of diarrhea in microscopic colitis

Table 1 Mean±SD of number of IEL/100 EC and thickness of collagen plate in patients with LC and CC

	n	No. of IEL/100 EC (mean±SD)	Thickness of collagen band (mean±SD)	Inflammation of propria
Lymphocytic colitis	46	32±12	8±2	Moderate
Collagenous colitis	13	14±4	25±9	Severe
Control group	18	4±1	8±3	Mild/none

Table 2 mean±SE values of daily stool weight, electrolyte concentration in fecal fluid and fecal pH in examined group of patients

	DSW (g/24 h)	Conc Na+ (mmol/L)	Conc K+ (mmol/L )	Conc Cl– (mmol/L)	pH
Lympocytic colitis	386.25±5.39b	58.11±5.38b	74.65±5.29b	28.85±2.55	6.31±0.14
Collagenous colitis	245.66±18.43b	54.14±8.42a	75.53±8.78a	36.07±7.29a	6.36±0.11
Control group	118.34±8.79	34.28±2.98	92.67±2.99	24.11±2.05	6.36±0.15
MC without diarrhea	139.19±15.92

^aP<0.05 vs Control group; ^bP<0.01 vs control group.