Intussusception is the telescoping of one segment of the intestine into another. It occurs more commonly in children between 6 months and 2 years of age and is often caused by viral gastroenteritis leading to mucosal edema and lymphoid hyperplasia. In adults, intussusception usually has an identifiable anatomical lead point such as a tumor, polyp, ulcer, or Meckel's diverticulum. Symptoms include abdominal pain, vomiting, and bloody stools. Diagnosis can be made using imaging studies like ultrasound, X-ray, or barium enema which may show signs like a target or meniscus.

1. Intussusception
Dr/ Hytham Nafady

2. Definition
• Telescoping invagination of an intestinal
segment into the lumen of a proximal segment.

3. Intussuscpetion
Without a
leading point
With a leading
point
Lymphoid hyperplasia
ESENTERY

4. Etiology
Children Adults
Spontaneous: (without
anatomical leading point):
•Celiac disease.
•Scleroderma.
•Whipple disease.
Spontaneous: (without
anatomical leading point) in 90%
of cases:
•Mucosal edema & lymphoid
hyperplasia after viral
gastroenteritis.
Leading point (90%):
•Tumor:
Usually benign in small intestine
& malignant in large intestine.
•Polyp,
•Ulcer,
•Foreign body.
Leading point:
•Meckel’s diverticulum.
•Polyp.
•Enterogeneous cyst.
•Ectopic pancreas.
•Purpura.

5. C.P
Children (6M-2Y) Adults
Abrupt onset of violent
crampy abdominal pain.
Vomiting.
Redcurrant jelly stool. Bloody stool.
Recurrent abdominal
pain.
Palpable abdominal
mass.
Palpable Abdominal
mass.

6. Types
Children Adults
Ileo-ileal.
Ileo-colic.
Ileo-colic.
Ileo-ileal.
Colo-colic.

7. Redcurrant jelly stool
الكشمش الأحمر

8. Plain x-ray abdomen
• May be normal.
• Meniscus sign:
• Crescent of gas within colonic lumen that
outlines the apex of intussusceptum.
• Little air in small intestine.

9. Meniscus
sign

10. Meniscus
sign

15. U/S
• Target sign:

17. Barium enema
• Coil spring appearance:
• Trapping of barium between the edematous
mucosal folds of the returning limb of
intussusceptum & wall of intussuscepian.
• Meniscus sign:
• Convex intraluminal mass.
The main contraindication of enema is perforation

18. Coil spring sign

21. Colo-colic intussusception with a
leading point of adenocarcinoma