Endoscopic classification and pathological features of primary intestinal lymphangiectasia

Area of Science:

• Gastroenterology
• Endoscopy
• Medical Imaging

Background:

• Primary intestinal lymphangiectasia (PIL) presents with variable endoscopic findings.
• Accurate classification of these findings is crucial for diagnosis and management.

Purpose of the Study:

• To classify the endoscopic features of intestinal mucosa in patients with PIL.
• To correlate endoscopic findings with imaging (PLCT) and pathological characteristics.
• To elucidate the underlying causes of observed endoscopic variations.

Main Methods:

• Retrospective analysis of endoscopic images from 123 PIL patients (2007-2018).
• Classification of endoscopic features into four types: nodular, granular, vesicular, and edematous.
• Correlation of each type with post-lymphographic computed tomography (PLCT) and small intestinal mucosal pathology.

Main Results:

• Four endoscopic types identified: nodular, granular, vesicular, and edematous.
• Nodular/granular types showed diffuse small intestinal wall thickening without contrast in the wall/mesentery on PLCT.
• Vesicular/edematous types displayed scattered contrast in the small intestinal wall/mesentery.
• Nodular/granular lymphangiectasia involved four mucosal layers; vesicular/edematous types primarily affected submucosal and muscular layers.

Conclusions:

• Endoscopic classification of PIL is valuable.
• Combining endoscopic findings with clinical and pathological data improves diagnostic accuracy.
• This approach offers significant utility for clinicians evaluating suspected PIL.