Small Bowel Neoplasms and Polyps (note: Lynch syndrome)

abstract
  
KEYWORDS:

Adenocarcinoma; Adenoma; Carcinoid; Crohn’s disease; Familial adenomatous polyposis; Lynch syndrome; Peutz-Jeghers syndrome; Small bowel tumors

 The small intestine is a relatively privileged organ that only rarely develops malignant or even benign tumors. Given this rarity, the relative inaccessibility of the organ during routine endoscopic procedures, and the typical absence or nonspecific nature of clinical manifestations, these tumors often go undiagnosed. Treatment and prognosis are tailored to each histological subtype of tumor. This chapter will discuss the epidemiology, presentation, diagnostics, and management for the most common small bowel tumors, and will highlight the importance of recognizing patients at higher risk of small bowel neoplasia.