Anal crypt gland infection, with spread to adjacent areas separated by muscle and fascia:
Pain: Perianal, rectal, or pelvic
Swelling, fluctuance, drainage, fever
Aggravated by defecation, sitting, coughing
Dull deep pelvic or rectal pain:
Delayed drainage may worsen outcome
Only if localized perianal abscess
Probe to rule out deeper tract
Need for operative drainage
Systemic toxicity/signs of sepsis
Be certain of extent of abscess:
Thorough rectal exam and probing is mandatory.
Imaging adds insight into deeper areas not accessible to exam
Deeper abscesses above dentate line have ...
Marcus RH, Stine RJ, Cohen, MA. Perirectal abscess. Ann Emerg Med. 1995;25(5):597–603.
Rizzo JA, Naig AL, Johnson EK. Anorectal abscess and fistula-in-ano: Evidence-based...
565.1 Anal fistula
566 Abscess of anal and rectal regions
K61.0 Anal abscess
K61.1 Rectal abscess
K61.3 Ischiorectal abscess
K60.4 Rectal fistula
91669008 Perirectal abscess (disorder)
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