Polyps Of Small Intestine

Polyps of small intestine are abnormal growths that arise from the lining of the small intestine. A polyp may be benign, precancerous, or, rarely, cancerous, depending on its tissue type. Some occur alone, while others develop as part of an inherited polyposis syndrome. Small-intestinal polyps can affect people of different ages, especially those with a personal or family history of gastrointestinal polyps.

Many small-intestinal polyps are found without symptoms, sometimes during testing for another reason or because a person has an inherited syndrome. Symptoms may develop when a polyp bleeds, becomes large, or blocks the intestine. Unlike common colon polyps symptoms, symptoms from a small-intestinal polyp may require specialized evaluation.

There is no single cause of a polyp in the small intestine. These growths may result from abnormal cell growth, ongoing inflammation, developmental changes in intestinal tissue, or inherited gene changes. In some cases, no clear cause is found.

Types of small-intestinal polyps

Main pathology categories include adenomatous or glandular polyps, which may be precancerous; hamartomatous polyps, which contain an unusual mixture of otherwise normal tissues; inflammatory or reactive polyps; and other less common lesions. Some lesions are associated with hereditary syndromes such as familial adenomatous polyposis or Peutz-Jeghers syndrome, while a sporadic polyp can occur without a known inherited condition. The term hyperplastic polyp is more often used for lesions in the colon, so the exact location and pathology matter.

Having a risk factor does not mean a person will develop small-intestinal polyps. People with an inherited risk may need individualized surveillance, genetic counseling, and testing of other parts of the digestive tract. Risk factors for adenomatous intestinal polyps should be reviewed with a gastroenterologist.

Evaluation may begin after symptoms such as bleeding, anemia, or abdominal pain, or because a person has a hereditary syndrome. A routine colonoscopy examines the large intestine rather than most of the small intestine, so colonoscopy polyps and small-intestinal polyps may require different tests. The choice depends on the suspected location, symptoms, and need for tissue sampling.

Pathology after biopsy or removal determines whether the lesion is inflammatory, hamartomatous, adenomatous, precancerous, or cancerous. This result helps guide treatment and follow-up, including whether additional testing for an inherited syndrome is needed.

Endoscopic removal or biopsy

Accessible, manageable polyps may be sampled or removed during balloon-assisted enteroscopy. The procedure is performed through an endoscope passed into the digestive tract, often with sedation or anesthesia. It may be suitable for selected benign or precancerous polyps and usually has a shorter recovery than surgery, although bleeding, perforation, and the need for follow-up pathology must be discussed.

Surgical removal

Surgery may be needed for a large, inaccessible, obstructing, repeatedly bleeding, or suspicious polyp. A surgeon may remove the affected segment of small intestine and reconnect the healthy ends when appropriate. Recovery usually includes a hospital stay and a gradual return to eating and normal activity, followed by pathology review to determine whether further treatment or surveillance is needed.

Many isolated benign polyps have a favorable outlook after complete removal. Adenomatous intestinal polyps and other high-risk lesions require pathology-based follow-up because some can become precancerous or cancerous. The outlook for a polyp depends on its type and whether it has been fully treated.

Factors that shape long-term outlook

Important factors include the polyp’s pathology, size and number, complete removal, bleeding or obstruction, an inherited syndrome, and any evidence of cancer. People with inherited polyposis syndromes may need lifelong surveillance because new polyps can develop even after one lesion is removed. Follow-up should be based on the pathology report and the recommendations of the treating specialist.