<unk>  are medical problems affecting the structure of the anus and rectum.  A person with an<unk>  anomaly would have some sort of deformative feature of the anus or rectum.
Examples of<unk>  include:
Anal stenosis
Imperforate anus
Proctitis
Anal Bleeding
Anal fistula
Anal cancer
Anal itching
Hemorrhoid (Piles)
Anorectal anomalies
Craniofacial anomalies
Urachal anomalies
Neural tube defects
Breastfeeding difficulties
Gum disease
Infertility causes
Infertility risk factors