The mucosa is recovering and shows a healing necrosis with erythematous edges and rarified vessels. Infectious colitis of unknown pathogen. The mucous membrane exhibits an edema, hemorrhagic lesions and rarefied vessels. The changes extend from the rectum to the the aboral third of the transverse colon. The clinical picture is dominated by diarrhea, history includes a recent infection.
Histology reveals an infectious colitis.
Microbiology fails to isolate a definite pathogen. Irradiation induced colitis Endoscopy of the rectum reveals hemorrhagic and erythematous lesions with obliterated vessels. Furthermore mucosal atrophy is obvious and haustration absent. Rectum and lower sigma are affected. Main clinical symptom is a watery and bloody diarrhea.