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MegacolonAka: Megarectum, Ogilvie's Syndrome
- Definition: Bowel distention based on abdominal XRay
- Rectosigmoid or descending colon >6.5 cm diameter or
- Ascending colon >8 cm diameter or
- Cecal diameter >12 cm
- Causes
- Toxic megacolon
- Inflammatory Bowel Disease
- Infectious colitis
- Clostridium difficile (Pseudomembranous colitis)
- Amebic colitis
- Congenital Megacolon (Hirschsprung's Disease)
- Acquired Megacolon
- Idiopathic megacolon
- Trypanosoma cruzi (Chaga's Disease)
- Incidence in U.S. is increasing
- Intestinal pseudo-obstruction (colon dysmotility)
- Acute due to medical cause (Ogilvie's Syndrome)
- Acute Causes
- Abdominal or orthopedic surgery
- Spinal cord injury
- Serious cardiovascular disorder
- Toxic megacolon
- References
- Phillips in Feldman (1998) GI Disease, p. 1810-12
Megacolon (C0025160) | |
|---|---|
| Definition (MSH) | Dilatation of the COLON, often to alarming dimensions. There are various types of megacolon including congenital megacolon in HIRSCHSPRUNG DISEASE, idiopathic megacolon in CONSTIPATION, and TOXIC MEGACOLON. |
| Concepts | Disease or Syndrome (T047) |
| ICD9 | 564.7 |
| MSH | D008531 |
| English | COLON ENLARGEMENT, Dilatation of colon, Megacolon, Megacolons |
| Spanish | dilatacion del colon |
| Parent Concepts | Colonic Diseases (C0009373), SMALL/LARGE BOWEL (C0549617), Non-Neoplastic Intestinal Disorder (C1882107), Acquired megacolon (C1384597), Megacolon, not Hirschsprung's (C0235904) |
| Sources | COSTAR, CST, DXP, LCH, MSH, MTH, MTHICD9, NCI, NDFRT, OMIM, SCTSPA, SNOMEDCT Derived from the NIH UMLS (Unified Medical Language System) |
Megarectum (C1456333) | |
|---|---|
| Concepts | Disease or Syndrome (T047) |
| English | Megarectum |
| Spanish | megarrecto |
| Parent Concepts | Reason not stated concept (C1276325) |
| Sources | MTH, SCTSPA, SNOMEDCT Derived from the NIH UMLS (Unified Medical Language System) |
