Synopsis
focal neutrophilic infiltrates in crypt epithelium
neutrophilic infiltrates in lamina propria
Etiology
Crohn disease (10%-17%)
acute infectious-type colitis (27% to 50%)
allergic colitis
ulcerative colitis
Hirschsprung disease
idiopathic focal active colitis (27%)
See also
focal active gastritis
References
Xin W, Brown PI, Greenson JK. The clinical significance of focal active colitis in pediatric patients. Am J Surg Pathol. 2003 Aug;27(8):1134-8. PMID: 12883246
Wightman HR. Active focal colitis. Hum Pathol. 1998 Aug;29(8):887-8. PMID: 9712435