Benign conditions of the small bowel include congenital, structural, and obstructive disorders that can affect intestinal function without being cancerous. Some, such as Meckel’s diverticulum, are present from birth, while others, like small-bowel diverticulosis or adhesions, develop over time. Many of these conditions remain asymptomatic, but when symptoms occur they commonly involve abdominal pain, bleeding, bloating, or bowel obstruction. Management depends on severity and ranges from conservative treatment to minimally invasive laparoscopic surgery when complications arise. Early recognition and appropriate treatment are important to prevent serious outcomes and ensure good recovery.
Benign Conditions of the Small Bowel
Congenital & Structural Conditions of the Small Intestine
- Meckel’s Diverticulum
What it is:
Meckel’s diverticulum is a small pouch on the small intestine present from birth. It forms when part of the embryonic vitelline duct does not fully disappear during early development.
Key features:
- It can sometimes contain stomach-like tissue that produces acid.
- This may cause irritation, bleeding, or ulceration in the nearby intestine.
Symptoms:
Some people have no symptoms at all. When symptoms do occur, they may include:
- Unexplained gastrointestinal bleeding (often in children)
- Abdominal pain
- Bowel obstruction
- Inflammation of the diverticulum (diverticulitis)
Treatment:
Treatment is surgical (favourably via a laparoscopic approach) when symptoms or complications occur.
- Diverticulectomy: Removal of the diverticulum alone.
Segmental bowel resection: Removal of a short piece of intestine if there is significant inflammation, ulceration, or obstruction
- Small-Bowel Diverticulosis (Non-Meckel)
What it is:
Small-bowel diverticulosis refers to the presence of small bulges (diverticula) along the small intestine, most commonly in the jejunum. These are usually acquired rather than congenital.
Possible issues:
Most people do not have symptoms, but complications can develop, such as:
- Inflammation
- Perforation (a hole in the intestinal wall)
- Malabsorption or bloating due to Small Intestinal Bacterial Overgrowth (SIBO)
Symptoms to watch for:
- Long-standing bloating or discomfort
- Diarrhoea
- Nutritional deficiencies
- Sudden, severe abdominal pain if complications occur
Treatment:
- Most cases do not require surgery.
- Surgery is recommended only when serious complications occur, such as perforation or obstruction.
- SIBO is typically treated with antibiotics and dietary measures.
Obstructive Conditions of the Small Bowel – Information for Patients
Several conditions can cause a blockage (obstruction) in the small intestine. When the bowel is obstructed, food, fluids, and gas cannot move through normally, leading to symptoms such as abdominal pain, vomiting, bloating, and constipation. Below are common causes of small bowel obstruction and how they are treated.
- Adhesions
Adhesions are bands of scar tissue that can form after abdominal surgery or inflammation.
They are the most common cause of small bowel obstruction.
Treatment:
In many cases, doctors first try non-surgical management. If surgery is needed, a laparoscopic adhesiolysis (keyhole surgery to cut the scar tissue) may be performed in selected patients. This minimally invasive approach often leads to quicker recovery and less postoperative pain.
- Intussusception
Intussusception occurs when one segment of the intestine slides into the next, similar to a telescope folding in on itself.
In adults, this condition is usually caused by a “lead point”, which may be a benign (non-cancerous) or malignant (cancerous) growth.
Treatment:
Because of the higher chance of an underlying cause in adults, surgical removal (resection) of the affected bowel is recommended. A laparoscopic approach is usually preferred when appropriate, offering a less invasive option.
- Bezoars
Bezoars are solid masses of undigested material that can block the bowel.
A common type is a phytobezoar, made of plant fibres. These may occur after stomach surgery (such as gastrectomy) or in people who do not chew their food thoroughly.
Treatment:
Surgery may be required to remove the bezoar. This typically involves a laparoscopic enterotomy, where a small incision is made in the intestine to remove the mass, followed by primary repair (closing the incision).
When to Seek Medical Attention
Seek urgent medical help if you experience:
- Severe abdominal pain
- Persistent vomiting
- Inability to pass gas or stool
- Abdominal swelling
These may be signs of bowel obstruction, which can become serious if not treated promptly.
Why Dr. Spyros Panagiotopoulos?
Mr. Spyros Panagiotopoulos is a leading Consultant in General and Metabolic/Bariatric Surgery at King’s College Hospital in London. His international expertise and research in obesity and metabolic disorders allow him to offer patients a highly specialised and empathetic approach. He ensures each patient receives comprehensive care through multidisciplinary collaboration, precision diagnosis, and safe, evidence-based treatment.