Hemorrhoids Explained: Internal vs External Types and Anatomy #133309 (License: Personal Use)

This detailed medical illustration depicts the anatomy of the anal canal, clearly labeling a swollen internal hemorrhoid located above the dentate line and an external hemorrhoid situated below it. The surrounding musculature, vascular structures, and mucosal layers are shown to provide clinical context for diagnosis and treatment planning.

Used on gastroenterology or colorectal health web pages to educate patients about hemorrhoid types, support symptom self-assessment, and explain surgical or non-surgical interventions; matches user intent to understand causes, symptoms, and anatomy of hemorrhoids.