Fig. 7

Histopathology of resected sigmoid. a Both resection margins showed a preserved architecture, with no features of ischemia and both the mucosal lining and muscular wall were viable. b The mucosal lining from the discolored areas showed mild chronic inflammation. The lamina propria has congested blood vessels overlying a viable but hypertrophic muscular coat. The features may be linked to acute on chronic obstruction. c There were visible ganglion cells and hypertrophic nerve trunks in the muscularis propria