May Cause

Obstruction of ureter

Smooth colon

Vesicoureteral reflux

May Be Caused by

 Common

Adynamic ileus

Anal stenosis

Colonic atresia

Dermatomyositis

Distal obstructing lesion

Functional megacolon

Hirschsprung disease

Imperforate anus

Rectal atresia

Scleroderma

Toxic megacolon

 Uncommon

Aerophagia

Amyloidosis

Anti-parkinsonism agent

Brain damage

Celiac disease

Chagas disease

Chronic colonic stricture

Chronic idiopathic intestinal pseudo-obstruction

Clostridium difficile colitis

Cystic fibrosis

Diabetes mellitus

Duplication

Fetal cytomegalovirus infection

Hinman syndrome

Hypothyroidism

Infantile hypothyroidism

Laxative abuse

Meconium plug syndrome

Meningomyelocele

Metachromatic leukodystrophy

Metaphyseal chondrodysplasia McKusick type

Multiple endocrine neoplasia syndrome

Multiple endocrine neoplasia syndrome type 2B

Muscular dystrophy

Neurofibromatosis

Neurogenic megacolon

Neuronal intestinal dysplasia

Ogilvie syndrome

Paralysis

Parkinsonism

Phenothiazine

Plexiform neurofibromatosis

Pro-Banthine

Prolonged immobilization

Riley-Day syndrome

Sacrococcygeal teratoma

Small left colon syndrome

Sotos syndrome

Spina bifida

Sprue

Steatorrhea

Waardenburg syndrome