Table 1. Demographic, clinical, diagnostic, and surgical characteristics of studied patients with intussusception, Tehran, Iran (March 2010-march 2015) .
| characteristics | Percentage | |
| Season of occurrence | Spring | 32.3 |
| Summer | 23.6 | |
| Autumn | 26.6 | |
| Winter | 17.5 | |
| Symptoms | Abdominal pain/Irritability | 94.2 |
| Nausea and vomiting [Containing biliary vomiting (3.4%)] | 66.8 | |
| Diarrhea | 38.6 | |
| Fever | 38.6 | |
| Bloody stool including bloody diarrhea and rectorrhagia | 26.1 | |
| GI bleeding | 3.8 | |
| Signs | Tenderness | 24.2 |
| Abdominal distention | 19.6 | |
| Abdominal mass | 14.1 | |
| Currant jelly stool | 13.6 | |
| Guarding | 8.9 | |
| Etiology | Idiopathic | 47.8 |
| Mesenteric LAP | 27.7 | |
| Viral respiratory infection | 9.1 | |
| Mesenteric LAP and Viral respiratory infection | 6.6 | |
| Meckel's diverticulum | 2.1 | |
| Other causes (e.g. tumor, history of GI surgery) | 6.7 | |
| Diagnostic tool | US | 75.9 |
| US and x-ray | 10 | |
| US and contrast enema | 7.4 | |
| Physical examination | 2.5 | |
| Contrast enema | 2 | |
| During surgery | 1.2 | |
| US, X-ray and Contrast enema | 0.5 | |
| Abdominal x-ray | 0.3 | |
| X-ray and contrast enema | 0.1 | |
|
Treatment (722 cases) |
Contrast enema | 59.4 |
| reduction surgery without resection | 30.3 | |
| reduction surgery with resection | 3 | |
| Pneumatic enema | 0.4 | |
| Spontaneously | 6.8 | |
| Location of the intussusception (198 cases based on surgery report) | Ileocolic | 87.87 |
| Ileoileal | 6.06 | |
| Colocolic | 3.02 | |
| Jejunojejunal | 3.02 |
US= Ultrasonography;LAP=lymphadenopathy