Colonic Pseudo-Obstruction with Distinct Transitional Zone in Adult Constipation Patients: Pathological Analysis and Results of Surgical Treatment

Department of Surgery, Seoul National University Hospital Gangnam Center, Seoul, Korea.
The American surgeon (Impact Factor: 0.82). 06/2011; 77(6):736-42.
Source: PubMed


There are subsets of chronic constipation patients showing features of colonic pseudo-obstruction (CPO) with distinct transitional zone (TZ). We intended to analyze the clinicopathologic characteristics and surgical outcomes of these patients. Twenty-five consecutive patients who underwent surgery for constipation over the 9-year period were analyzed. TZ (+) group was defined as patients showing symptoms or signs of large bowel obstruction with dilated proximal and collapsed distal colon around the TZ at the time of operation, but without any evidence of mechanical causes of obstruction. Nineteen (76%) patients had features of CPO with TZ. All TZs were located in the left colon. Pathologically, segmental hypoganglionosis was identified at the TZ in all TZ (+) patients. On the other hand, pathologic diagnosis was intestinal neuronal dysplasia type B in the remaining six (24%) patients having a uniform colon diameter without demonstrable dilatations (TZ (-) group). Among TZ (+) patients, 17 (90%) underwent total colectomy with ileorectal anastomosis and two (10%) underwent enterostomy. Long-term follow-up (median 56 months) showed no recurrence of constipation in this group of patients. All six TZ (-) patients underwent total colectomy with ileorectal anastomosis and two (33%) of them had persistent symptoms of constipation on long-term follow-up (median 60 months). In a subset of adult constipation patients presenting with features of CPO with TZ, segmental hypoganglionosis was the final pathologic diagnosis. Constipation patients with features of CPO with distinct TZ in the left colon are expected to benefit from surgical intervention.

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    • "CIP can also be classified based on the existence of a transitional zone. Choe et al.10 examined the surgical specimens of patients who received surgery for intractable constipation and found that a substantial number of patients presented with a distinct transitional zone with segmental hypoganglionosis. Another study by Do et al.11 suggested a novel classification of hypoganglionosis patients into two groups: type I with a focally narrowed transition zone and type II without a transition zone. "
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    ABSTRACT: Chronic intestinal pseudo-obstruction is a rare clinical syndrome which is characterized by intestinal obstruction without occluding lesions in the intestinal lumen and pregnancy is one of the important aggravating factors. Here, we report a case of a woman with intractable intestinal pseudo-obstruction that was precipitated by pregnancy. She could not make any stool passage for more than 4 weeks until a fetal gestational age of 17 weeks was reached. However, the patient could be maintained by repetitive colonoscopic decompressions and finally total colectomy could be performed successfully at a fetal gestational age of 21 weeks.
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    ABSTRACT: A chronic intestinal pseudo-obstruction is a rare disorder and a severe digestive syndrome. It is characterized by deranged gut propulsive motility that resembles a mechanical obstruction, but no obstructive process is present. An intestinal pseudo-obstruction may be classified as acute or chronic; the chronic form may also be classified as idiopathic or secondary to a variety of diseases. Treatment of intestinal pseudo-obstruction involves nutritional, pharmacological, and surgical therapies. Surgery should be limited to patients who are refractory to medical therapy and show a deteriorating course. Despite available medical and surgical interventions, the outcome remains poor. Here, we describe a case of a 54-year-old female with chronic constipation and abdominal distension, who was subsequently found to have segmental aganglionosis. The patient was treated with a subtotal colectomy and ileosigmoidostomy without sequelae.
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    ABSTRACT: For the select small number of constipated patients that cannot be managed medically, surgical options should be considered. Increases in our knowledge of colorectal physiology and experience have fostered improvements in patient evaluation and surgical management. Currently, patients with refractory colonic inertia are offered total abdominal colectomy and ileorectal anastomosis, often with laparoscopic techniques. With proper patient selection, the results have been excellent for resolving the frequency and quality of bowel movements. However, symptoms such as bloating and abdominal pain, which may be related to irritable bowel syndrome rather than the colonic inertia, may persist.
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