Atresia, Stenosis, and Other Obstruction of the Colon Workup
- Author: Nelson G Rosen, MD, FACS, FAAP; Chief Editor: Marleta Reynolds, MD more...
Laboratory Studies
All children with neonatal bowel obstruction should have an electrolyte measurement, complete blood cell (CBC) count, and a crossmatch prior to operative intervention.
Imaging Studies
Antenatal ultrasonography may reveal bowel loop distention or polyhydramnios.
Plain radiography of the abdomen reveals bowel obstruction and may reveal a prominent dilated loop. A prone view shows absence of gas in the rectum, although gas may be present if the film was obtained after the rectum was examined.
Contrast enema may be performed prior to surgery at the discretion of the surgeon and can be useful in ruling out the presence of other lesions downstream from the atresia. It reveals a microcolon with a rounded proximal end (see the image below).
Contrast enema showing microcolon with dilated proximal colon (colonic atresia of sigmoid colon). Radiography in congenital colonic stenosis also reveals an obstructive pattern that may mimic atresia. Contrast enema reveals narrowing of the colon, with limited filling of the dilated proximal colon (see the image below).
Contrast enema revealing colonic stenosis at the hepatic flexure. Diagnostic Procedures
Rectal biopsy (performed either as a suction biopsy prior to surgical correction or at the time of operative correction) should be considered to evaluate for associated Hirschsprung disease.[43, 29] The association is quite rare; in a recent series of 12 patients, none were found to have Hirschsprung disease.[44]
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| Author (Year) | Number of Patients | Procedure | Survival Rate |
| Gross (1952)[10] | 6 | Ostomy* | 33% |
| Sturim (1966)[48] | 2 | Ostomy | 50% |
| Coran (1969)[49] | 9 | Ostomy | 66% |
| Pohlson (1988)[21] | 11 | Ostomy (6), anastomosis (4)† , resection diaphragm (1)‡ | 73% |
| Smith (1989)[50] | 2 | Not specified | 100% |
| Davenport (1990)[5] | 11 | Ostomy (6); anastomosis (4) | 91% |
| Barrack (1993)[51] | 2 | Anastomosis | 100% |
| Dalla Vecchia (1998)[11] | 21 | Ostomy (18); anastomosis (3) | 100% |
| Abu-Judeh (2001)[47] | 1 | Anastomosis | 100% |
| Dassinger (2009)[44] | 12 | Ostomy (2); anastomosis (10) | 100% |
| Footnotes -*Ostomy, resection and staged anastomosis months later † Resection with primary anastomosis ‡Cecotomy, resection of diaphragm | |||

