Anal Conditions😍

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Pilonidal Sinus

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Features

  • Sinus or abscess in the natal cleft.
  • Cause: Ingrowing of hair.
  • Demographics: Most common in hairy men.
  • Nickname: Jeep driver's disease.

Surgical Options:

  • Excision → Rhomboid/Limberg flap (for complex cases).
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  • Bascom's technique.
  • Karaydakis surgery.
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Hemorrhoids (Piles)

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Definition

  • Dilated vascular channels bleeding from sinusoids (cushions).
  • Most common cause of bleeding per rectum (P/R).
  •  1° hemorrhoids at 3, 7, 11 o'clock positions
    • Internal hemorhoids
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Clinical Features:

  • Painless bleeding P/R
  • Constipation.
  • Painful if:
    • External hemorrhoids
      • below dentate line
      • Self limiting
      • Squamous epithelium
      • Black current apperance d/t repeated thrombosis
    • Thrombosed (Meleney's 5-day self-healing lesion, felt on DRE).

Investigation

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  • IOC: Proctoscopy.

Grades & Management

  • Banding is preferred for Internal hemorrhoids
Grade
Features
Management
Grade I
• Only bleeds
no prolapse
High fiber diet + increased fluid intake
Laxatives, Sitz bath
Grade II
• Prolapse
• but
spontaneously reduces
• Grade I measures,
Banding/Sclerotherapy
Grade III
• Prolapse;
• manually
pushed inside
Surgical Hemorrhoidectomy
• Open [Milligan-Morgan]
• Closed
[Ferguson]
Stapled Hemorrhoidopexy (TOC)
DG-HAL (Doppler-Guided Hemorrhoidal Artery Ligation)

Milli de hemorrhoid → Open aki
but Ferguson nte hemorrhoid → arodum paranjilla
Grade IV
• Remains prolapsed
(cannot be reduced)
Surgical options (same as Grade III)
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Complications of Hemorrhoid Surgery

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  • Urinary Retention: m/c complication.
  • Reactionary hemorrhage.
  • Pain.
  • Stenosis.
  • Incontinence.
  • Recurrence.

Anal Fissure

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Definition

  • Breach in anal epithelium.

m/c Site

  • Posterior midline.

Clinical Features

  • Painful bleeding P/R.
  • Constipation.
  • Skin tag/sentinel pile (in chronic cases).
    • Chronic Fissure: Duration >4 weeks.
  • Avoid DRE or proctoscopy
    • As it is painful

Management

  • First-line (Conservative):
    • Lifestyle changes.
    • Laxatives.
    • Local xylocaine, CCB cream.
  • Surgical (if medical fails):
    • Lateral anal sphincterotomy
    • Anal advancement flap.

Rectal Prolapse

Types & Management

Partial Thickness Prolapse (Mucosal)

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  • Features: 
    • Only mucosal prolapse.
    • Common in children due to incomplete sacral curve.
  • Management:
    • First Episode: 
      • Digital repositioning.
    • Recurrent:
      • Thiersch wiring.
      • Sclerotherapy.

Full Thickness/Complete Prolapse

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Features: 

  • All layers of rectum prolapse.
  • Common in adults due to weak pelvic floor.

Management:

Perineal Procedures:

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  • Easy, fewer complications.
  • High recurrence rate.
  • Thiersch repair (purse-string sutures).
  • Delorme's repair (plication of prolapse).
  • Altemeier (perineal rectosigmoidectomy).
  • Mnemonic:
    • Thurish in Purse;
    • Altermeier → Ultimate resection → Through perinium, resect out rectum and sigmoid
    • Deloreme → Deal locally

Abdominal Procedures:

  • More difficult, increased complications.
  • Least recurrence rate.
  • Ripstein rectopexy.
  • Weil rectopexy.
  • Frykberg Goldman (Resection rectopexy).
  • Mnemonic: Rip () the Gold () Weil () (Abdomen)
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Anorectal Malformations (ARM)

Level of Anomaly

  • High Anomaly:
    • Male: Rectovesical fistula.
    • Female: Rectovaginal fistula.
  • Low Anomaly:
    • Male: Anal stenosis.
    • Female: Anal agenesis (with perineal fistula).
  • Miscellaneous:
    • Female: Persistent cloacal anomaly (common channel for rectum, vagina, urethra).

Anorectal malformation associations

  1. VACTERL
      • Vertebral, Anorectal, Cardiac (m/c), Tracheoesophageal fistula, Renal, Limb defects
  1. CURARINO syndrome
      • ARM + Sacrococcygeal teratoma

Similar

  • Goldenhar Syndrome
    • Oculoauriculovertebral spectrum
    • Features
      • Hypoplasia of:
        • Malar
        • Maxillary
        • Mandibular regions
      • Macrostomia
      • Microtia
      • Preauricular and facial skin tags
      • Hemivertebrae
        • Usually cervical
      • Mental handicap
      • Cardiac, renal, and CNS anomalies
    • Ocular
      • Dermoid
      • Upper lid notching / coloboma
      • Microphthalmos
      • Disc coloboma

Investigation (Invertogram)

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  • Timing: Done 24 hours after birth.
  • Procedure: 
    • Patient inverted, metallic marker placed at anal opening.
    • X-ray taken to measure distance from gas bubble (rectum) & marker.
      • Interpretation:
        • <2 cm: Low anomaly.
        • >2 cm: High anomaly.
  • Note: MRI is m/c used IOC now for detailed anatomy.

Management

  • Surgery to bring the rectum down (anoplasty/anorectoplasty).

Anorectal Abscess & Fistula

Source

  • Infected anal glands.
  • Location: Close to the dentate line.

Perianal Abscess

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Clinical Features

  • Pain & fever.

Management

  • Incision & drainage.

Complication

  • Perianal fistulae (if improperly managed or recurring).

Perianal Fistula

Cause

  • Commonly a complication of perianal abscess (unresolved).

Clinical Features

  • Pus discharge per rectum (P/R).

Goodsall's Rule

Internal opening is in midline
Internal opening is in midline
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  • Imaginary line drawn transversely through the anal verge.
  • Fistulae anterior to line: Usually straight tracts to anterior internal anal sphincter.
  • Fistulae posterior to line: Usually curved tracts to posterior anal sphincter
  • Exception: 
    • Long anterior fistula (>3 cm) may curve to posterior midline opening.

Classification & Imaging

  • Park's Classification
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    • Describes relationship of fistula to sphincter muscles.
    • Park and do anal fistula
  • IOC: MR fistulogram (to map tract for surgery).

Watercan Perineum

  • Multiple perianal fistulae with multiple external openings.
  • N. Gonorrhea
  • Causes:
    • Crohn's disease (m/c).
    • Trauma.
    • Tuberculosis.
    • Cancer.
    • Immunocompromised patients.

Management (Based on Internal Opening & Complexities)

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Low Fistulae (Below anorectal ring/lower sphincter)

  • Procedures:
    • Fistulectomy (complete excision of tract).
    • Fistulotomy (opening up the tract).
    • LIFT (Ligation of Intersphincteric Fistula Tract).
    • VAFT (Video Assisted Fistula Therapy).

High Fistulae (Above anorectal ring/through upper sphincter)

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  • Procedures:
    • Seton's procedure (slow cutting seton or draining seton).
      • Risk: Incontinence (especially with cutting setons).