Internal hemorrhoid

Clinical Features

• Occur proximal to dentate line
• Constant in their location: 2-, 5-, and 9-o'clock positions (when pt viewed prone)
• Not readily palpable; best visualized through anoscope
  • May be palpable when prolapsed or thrombosed
• Painless bleeding
  • Only painful when nonreducible, prolapsed hemorrhoids strangulate OR thrombose
    • Can lead to infection/necrosis

Differential Diagnosis

Anorectal Disorders

• Anal fissure
• Anal fistula
• Anal malignancy
• Anal tags
• Anorectal abscess
• Coccydynia
• Colorectal malignancy
• Condyloma acuminata
• Constipation
• Crohn's disease
• Cryptitis
• GC/Chlamydia
• Fecal impaction
• Hemorrhoids
  • Internal hemorrhoid
  • External hemorrhoid
• Levator ani syndrome
• Pedunculated polyp
• Pilonidal cyst
• Proctalgia fugax
• Proctitis
• Pruritus ani
  • Enterobius (pinworms)
• Rectal foreign body
• Rectal prolapse
• Syphilitic fissure

Non-GI Look-a-Likes

• Prostatitis

Undifferentiated lower gastrointestinal bleeding

• Upper GI Bleeding
• Diverticular disease
  • Diverticulosis
  • Diverticulitis
• Vascular ectasia / angiodysplasia
• Inflammatory bowel disease
• Infectious colitis
• Mesenteric Ischemia / ischemic colitis
• Meckel's diverticulum
• Colorectal cancer / polyps
• Hemorrhoids
  • Internal hemorrhoid
  • External hemorrhoid
• Aortoenteric fistula
  • Nearly 100% mortality if untreated
  • Consider in patients with gastrointestinal bleeding and known abdominal aortic aneurysms or aortic grafts
• Rectal foreign body
• Rectal ulcer (HIV, Syphilis, STI)
• Anal fissure

Diagnosis

Classification

• Grade I: Luminal protrusion above dentate line; no prolapse; painless bleeding
• Grade II: Prolapse with spontaneous reduction; prolapse during straining
• Grade III: Prolapse requires manual reduction; prolapse during straining
• Grade IV: Prolapse—nonreducible; can result in edema and strangulation

Management

• Conservative Tx
  • Indicated for mild to moderate symptomatic pts w/ grade 1 to grade 3 hemorrhoids
  • Stool softeners (psyllium), high-fiber diet, topical analgesics
  • Avoid laxatives causing liquid stool (can lead to cryptitis and anal sepsis)
  • Sitz bath 15min TID and after each bowel movement (decreases sphincter pressure)
  • Outpt surgical referral
  • Prolapsed hemorrhoid in pt w/ minimal symptoms can be manually reduced
• Emergent surgical consultation and intervention is indicated for:
  • Continued and severe bleeding
  • Incarceration and/or strangulation (grade 4 hemorrhoids)
  • Intractable pain

Prolapse

• When prolapse occurs may develop mucous discharge and pruritus ani
  • If prolapse cannot be reduced progressive edema and strangulation may result
  • Other complications: severe bleeding, thrombosis, infarction, gangrene, sepsis

See Also

• Anorectal Disorders