A wide range of miscellaneous disorders can affect the bowel. Those discussed in this chapter include cystic disorders (colitis cystica profunda and pneumatosis cystoides intestinalis), protein-losing enteropathy, vascular disorders of the intestine (spontaneous intramural haemorrhage and ortoenteric fistulas), intestinal pseudo-obstruction (acute colonic pseudo-obstruction, chronic intestinal pseudo-obstruction), various disorders of the colon and rectum (including microscopic, collagenous, and lymphocytic colitis, malakoplakia, solitary rectal ulcer syndrome, and stercoral ulcers), complications of parenteral nutrition and intestinal failure, peritoneal disorders, and endometriosis.