Fat encompassed the entire circumference of the bowel. Villi are present, even though they are somewhat distorted. There is transmural inflammation and fibrosis in all slides. The inflammatory cells are predominantly mononuclear but some eosinophils are present, and in some slides there are neutrophils in the fistula tract. The epithelium does not reveal loss of mucin.
Some slides have foci of loose collections of macrophages, but no definite granulomas are present.
The nerve branches are prominent. Crohn's disease, based on the gross and histology. Fibrous adhesions 2nd to the IBD causing kinking in the bowel loops. Carcinomas are the most common cause.