Anal fissure 284

Perianal streptococcal infection, ‘soggy bottom’ 284

Threadworm infestations 285

Rectal prolapse 285

Solitary rectal ulcer syndrome 285

Inflammatory bowel disease 285

The perianal examination is an important part of the examination of the gastrointestinal tract. This is best done by inspection with the patient lying in the left lateral position. The perianal region can be inspected by gently parting the buttocks....