20 y/o f:hospital for vomiting & extreme abdominal bloating & pain. ct: colon was 3x normal size & swelling between intestines. what could cause this?

Enlarged colon: Could be Hirshsprung's -congenital absence of nerve cells , or congential absence of muscularis propria(usually in childhood) Crohns disease, C difficile infection, fecal impaction, CMV infection in HIV, Chagas disease( South America) , use of risperidone, autoimmune, diabetes, hypothryoidism.,ischemia adhesions/ twisting/ volvulus ( usually in elderly), It is an acute emergency.Must decompress