Model of a human rectum showing the inner structures and different diseases:

 

- Ulcerative Colitis

- Internal and External Fistula

- Internal and External Hemorrhoids

- Annular Cancer

- Sessile Polyp

- Submucosal Abscess

- Skin Tag

- Pedunculated Polyp

- Supralevator Abscess

- Ischiorectal Abscess

- Cryptitis

- Diverticulum

- Condyloma Acuminatom

- Fissure

- Condyloma Latum