A lump near the anus: what changes the assessment?

Describe when it appears

A sudden painful lump differs from tissue that comes out during a bowel movement and returns, or a stable skin tag. Possible causes include a thrombosed haemorrhoid, an abscess or prolapsing tissue. Examination establishes the cause.

Consider an abscess with worsening pain

Increasing pain, swelling or fever needs prompt assessment. A deeper abscess may not produce an obvious external lump. Do not squeeze a swelling or rely on the absence of drainage to rule out infection.

Bring a useful timeline

Record the onset, changes in size, relationship to bowel movements and any bleeding or drainage. Mention previous surgery, Crohn’s disease and immune-suppressing medicines if applicable.

A photograph has limits

A photograph may document a prolapse that is absent during the visit, but it cannot establish depth or replace examination. A persistent or changing lump should be assessed even if it is painless.

Questions for your appointment

• Is this a skin lesion or tissue coming from inside?
• Are there signs of an abscess?
• Does it need treatment now or planned review?

Further reading

• ASCRS — Abscess and fistula guideline (2022)
• ASCRS — Rectal prolapse

Related guides

• Anal abscess
• Hemorrhoid treatment in Riyadh: diagnosis and options
• Rectal prolapse