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Related Concept Videos

Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

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Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
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Chronic Bowel Disorders: Introduction01:17

Chronic Bowel Disorders: Introduction

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Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
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Histology of the Small Intestine01:27

Histology of the Small Intestine

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The small intestine exhibits a unique histological structure that significantly enhances its function in digestion and nutrient absorption. These structures include circular folds, villi, and various specialized cells that collectively facilitate the digestion of food.
The intestinal lining features transverse folds called circular folds, each housing fingerlike projections known as intestinal villi. These villi are covered by a layer of simple columnar epithelium, also referred to as...
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Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

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Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
Sigmoidoscopy
Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...
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Inflammatory Bowel Disease V: Surgical Management01:21

Inflammatory Bowel Disease V: Surgical Management

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Surgical interventions for inflammatory bowel disease (IBD), which includes ulcerative colitis and Crohn's disease, are essential in managing symptoms and addressing complications. The selection of surgical procedures is contingent upon the specific conditions and complications that stem from these illnesses.
Here are some common surgical interventions for IBD:
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Inflammatory Bowel Disease II: Crohn's Disease01:30

Inflammatory Bowel Disease II: Crohn's Disease

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Introduction
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
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Updated: Mar 22, 2026

Establishment and Characterization of Small Bowel Neuroendocrine Tumor Spheroids
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Establishment and Characterization of Small Bowel Neuroendocrine Tumor Spheroids

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Small Bowel Neoplasms and Polyps.

Kamron Pourmand1, Steven H Itzkowitz2

  • 1The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, One Gustave Levy Place, GI Division, Box 1069, New York City, NY, 10029, USA.

Current Gastroenterology Reports
|April 18, 2016
PubMed
Summary
This summary is machine-generated.

Small intestine tumors are rare and often undiagnosed due to their location and subtle symptoms. Early recognition of high-risk patients is crucial for timely diagnosis and tailored treatment of these rare neoplasms.

Keywords:
AdenocarcinomaAdenomaCarcinoidCrohn’s diseaseFamilial adenomatous polyposisLynch syndromePeutz-Jeghers syndromeSmall bowel tumors

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Area of Science:

  • Gastroenterology
  • Oncology
  • Surgical Oncology

Background:

  • Small intestine tumors are exceptionally rare compared to other gastrointestinal malignancies.
  • Inaccessibility during routine endoscopy and nonspecific symptoms contribute to delayed diagnosis.
  • Tumor behavior, treatment, and prognosis vary significantly by histological subtype.

Purpose of the Study:

  • To review the epidemiology, clinical presentation, diagnostic methods, and management strategies for common small bowel tumors.
  • To emphasize the importance of identifying individuals at increased risk for small bowel neoplasia.

Main Methods:

  • Literature review and synthesis of current knowledge on small bowel tumors.
  • Discussion of diagnostic modalities including imaging and biopsy techniques.
  • Overview of treatment approaches based on tumor type and stage.

Main Results:

  • Small bowel tumors present a diagnostic challenge due to their rarity and often subtle clinical features.
  • Histological classification is paramount for determining appropriate treatment and predicting prognosis.
  • Risk stratification aids in the early detection of potentially malignant or benign neoplasms.

Conclusions:

  • Despite their rarity, small bowel tumors require a high index of suspicion and a systematic approach to diagnosis and management.
  • Recognizing high-risk individuals is key to improving outcomes for patients with small bowel neoplasia.
  • Multidisciplinary collaboration is essential for optimal patient care.