Video summary

Patología Quirúrgica del Recto y Ano - Dr Echevarria - 4° Unidad 14/09/26

Main summary

Key takeaways

Educational

Main ideas / lessons (Patología Quirúrgica del Recto y Ano: Hemorroides y Fístulas)

1) Scope / triage of rectal–anal conditions

The lecturer recommends starting with a broad differential diagnosis for conditions involving the rectum and anus, including:

  • Prolapse
  • Hemorrhoids
  • Fissures
  • Fistulas
  • Tumor pathology (explicitly stated as out of scope for this segment)

For this session, they focus only on hemorrhoids and fistulas.

2) Hemorrhoids: definition, causes, types, and staging

What hemorrhoids are

Hemorrhoidal “disease” is not simply “having hemorrhoids.”

Definition: dilation of the hemorrhoidal venous plexus, analogous to varicose/venous dilation.

Mechanism (as described):

  • Venous dilations form a saccular enlargement
  • As they fill and gain weight, they protrude and displace the mucosa outward

Key distinction:

  • Everyone has hemorrhoidal venous plexuses, but not everyone has hemorrhoidal pathology.

Two main contributing components

  1. Increased venous pressure / reflux
  2. Increased venous return + increased intra-abdominal pressure, especially common in pregnancy

Common risk settings / habits

  • Constipation
  • Prolonged sitting on the toilet
    • Even without constipation
    • Examples mentioned: reading (newspaper), phone use, watching series
    • Typical duration noted: sitting ~20 minutes

Epidemiology notes:

  • Often said to be more common after ~45–50, though the lecturer suggests this is changing.
  • Diet patterns (e.g., more carbohydrates → more constipation) and smartphone use during bathroom time are described as current contributors.
  • Claim included: there are no studies showing that a specific duration of bathroom sitting (e.g., 2–3 years of >10 minutes) directly increases risk.

Classification by location

  • External hemorrhoids: protrusion around/at the anal rim
  • Internal hemorrhoids: require differentiation from external disease

Internal hemorrhoid grading (Goligher-style)

  • Grades 1–2: generally not operated on (managed conservatively; often by gastroenterology)
  • Grades 3–4: surgery indicated (managed by surgery)

Clinical evolution:

  • Grade 1: imperceptible; seen on proctoscopy/colonoscopy
  • Grade 2: prolapses but does not pass outside the anus; partial prolapse; usually medical management
  • Grade 3: protrudes but reduces spontaneously or manually
  • Grade 4: protrudes and does not reduce

Thrombosed vs non-thrombosed hemorrhoids

  • Thrombosed hemorrhoids: require drainage (can be done outside the operating room)
    • Technique described: cut and remove clots
  • Pain difference:
    • Thrombosed: extremely painful (ischemia → high-intensity pain)
    • Non-thrombosed: swelling/discomfort sensation; less intense pain

“Natural history” / progression concept

Hemorrhoids can worsen gradually:

  • A lower grade may progress toward higher grades as dilation continues.

Clot formation explanation:

  • The venous sac may develop turbulent flow
  • Turbulence activates coagulation → microthrombi → a larger thrombus

Practical localization method: the “clock face”

To document lesion position consistently, the anus is mapped like a clock:

  • 12 o’clock = top
  • 6 o’clock = bottom
  • 3 o’clock = right side (reference)
  • 9 o’clock = left side

Importance:

  • Helps the next clinician locate the same lesion reliably
  • Exam interpretation may change with patient position (e.g., supine vs prone)

Special note: hemorrhoids can mimic or coexist with other lesions

  • Grade 4 hemorrhoids can be so large they are confused with prolapse.
  • Hemorrhoids may coexist with anal fissures, with fissures potentially caused by:
    • Constipation
    • Sexual intercourse
  • After chronic hemorrhoids resolve, atrophic skin flaps may remain.
    • External hemorrhoids can “appear to resolve” as inflammation decreases, even if tissue hasn’t truly “dissolved.”
    • These flaps can mimic papillomatous lesions.
    • They can be reassurance that the finding relates to a history of hemorrhoidal disease.

3) Hemorrhoid treatment methodology (as described)

A) Conservative / minimally invasive (primarily for Grade 1–2)

Medical management

  • Example medications mentioned:
    • Diosmin
    • Calcium dobesilate

Proctological procedures

  • Laser / coagulation
    • Monopolar energy or laser can be used
  • Infrared coagulation
    • Temperature increases → coagulation of hemorrhoidal tissue
  • Fiber-based laser
    • A thin fiber is inserted through mucosa
    • Laser light cuts through mucosa
    • The hemorrhoidal packet can fall outward

Sclerotherapy

  • Injection of substances causing fibrosis
  • Goal: harden/reinforce the wall so the hemorrhoidal plexus stops filling
  • Outcomes claimed:
    • Success ~90%
    • Recurrence risk is described as high if lifestyle causes aren’t corrected

Elastic band ligation (“ligatures”)

  • Mechanism:
    • A device pulls hemorrhoids
    • The band slides to the base
    • Mechanical force prevents blood entry → necrosis → falls off
  • Limitation:
    • Not definitive if underlying risk factors persist
  • Outcomes cited:
    • Success close to 80%
    • Recurrence 60–70%
  • Not performed for Grade 3–4 (too large)

B) Surgical treatment (for Grade 3–4 and complex cases)

Before surgery:

  • Patient under anesthesia
  • Concept:
    • Identify and ligate the venous plexus / vascular pedicle
    • Excise/remove hemorrhoidal tissue depending on technique

Open vs closed excisional techniques

  • Open technique: e.g., Milligan–Morgan
    • After excision, the wound is left open
  • Closed technique: e.g., Ferguson
    • After excision, the wound is closed with sutures (absorbable threads)

Pros/cons mentioned:

  • Closed technique:
    • Infection concern discussed; counterargument given that infection risk may be low depending on patient factors
  • Open technique:
    • Leaves exposed tissue; healing/scarring may affect anal lumen caliber

Limit on bundles removed in one session

  • Maximum: up to three hemorrhoidal bundles
  • Rationale:
    • Removing more increases risk of stenosis from excessive scarring and reduced anal lumen

Other surgical variants mentioned

  • Whitehead
    • Described as involving mucosa/submucosa sectioning and anastomosis
  • Rey Neto and Parx
    • Mentioned as alternatives within “buried” techniques, without detailed steps

Post-operative care

  • Sitz baths
    • Daily, 2–3 times/day and after bowel movements
    • Purpose:
      • Clean the area
      • Reduce bacterial load, especially after defecation

Stapled hemorrhoidopexy (“Longo” concept)

  • Circular stapling device:
    • Inserted into/around hemorrhoidal tissue
    • Creates a circular staple line
    • Cuts/removes redundant tissue as the device closes
  • Purpose:
    • Staple/secure hemorrhoidal bundle region and remove excess tissue

4) Abscess vs fistula: definitions, clues, anatomy, classification, and treatment

Relationship between abscess and fistula

  • A fistula cannot exist without a prior abscess.
  • Abscess mechanism described:
    • Obstruction of crypts around the dentate line
    • Blocked mucus secretion → bacterial overgrowth → abscess formation

Who is more likely to develop them

Higher risk mentioned for:

  • People with severe/chronic constipation
  • Diabetes
  • Obesity
  • Severe cases may lead to Fournier’s gangrene (rare; mentioned as an extreme possibility)

Definitions

  • Abscess: collection of pus in subcutaneous cellular tissue around the anus
  • Fistula: communication between:
    • The abscess cavity (internal source)
    • The outside

Symptom patterns and key clues

Symptoms can overlap with hemorrhoids:

  • Pain
  • Itching
  • Bleeding

Key fistula clue:

  • Patient reports staining underwear with mucus (suggests fistula until proven otherwise).

Fistula behavior over time

  • Tract tends to:
    • Close spontaneously
    • Reopen spontaneously
  • Leads to intermittent drainage—symptoms can fluctuate over months

How fistulas look on exam

  • External openings typically near/around anal margin; sometimes within anal mucosa
  • There is:
    • An entrance and an exit
    • Mucosal elevation/growth internally
  • Over time:
    • Tract becomes fibrotic, forming a tunnel
    • Mucosa-lined tunnel produces mucus → underwear staining
    • Mucus may have bad odor (bacterial load)

Which sex is more commonly affected?

  • Statement differed by condition:
    • Abscesses: more in men
    • Fistulas: more frequently seen in women (as stated in subtitles)

5) Classification of fistulas and workup

Goodsall’s rule (complexity rule)

The anus is divided into two triangles using bony landmarks:

  • Anterior triangle: tends to follow a straighter course
  • Posterior triangle: tends to follow a curved course

Criteria for complex fistula (from subtitles):

  • Curved path → complex
  • Length > 3 cm → complex
  • More than one opening → complex

Fistulography (workup to define tracts)

Used because posterior or branching fistulas may connect internally.

Method described:

  • Insert catheter through external opening
  • Inject contrast medium
  • Take X-ray images

Purpose:

  • Determine whether there is one tract or multiple connections
  • Reduce recurrence by improving surgical planning

Exception stated:

  • Anything >3 cm is treated as likely curved/complex even if anterior.

Types by relationship to sphincters

  1. Intersphincteric: exits between internal sphincter layers
  2. Transsphincteric: passes through external sphincter
  3. Suprasphincteric: rises above external sphincter
  4. Extrasphincteric: entry extremely high; passes above sphincters

Additional location categories (frequency ordering mentioned)

  • Most frequent: perianal (often produces simpler fistulas)
  • Next: ischiorectal
  • Also mentioned:
    • Between sphincters
    • Levels involving levator ani / supralevator ani

6) Fistula treatment: surgical options and techniques (as described)

General historical / obsolete approach

  • Seton / “ketone” technique:
    • Cannulate tract
    • Place synthetic guide (or silk)
    • Produces fibrosis and gradual cutting/loosening until edges meet and the area opens
  • Lecturer notes it is obsolete, except for very complex fistulas.

Fistulotomy (cutting)

Concept:

  • Place a catheter through the exit orifice to reach the entrance orifice.

Localization:

  • Cannulate duct
  • Inject small amount of hydrogen peroxide
  • Foam appears along the tract to identify entrance/exit

Procedure:

  • After mapping the tract:
    • Cut with scalpel along the catheter channel
    • Fully open the tissue

Aftercare:

  • Similar to hemorrhoids: sitz baths and wound care
  • Notes:
    • No sutures
    • Painful/bothersome, though healing occurs

Fistulectomy (removal of tract)

  • Removes the entire fistulous duct
  • Can be left open or closed

Variation mentioned: mucosal advancement flap

  • Incise rectal mucosa around internal opening
  • Advance flap and suture
  • Usually paired with fistulectomy

Lecturer claim: this is the most frequent practice in their setting.

Minimally invasive / endoscopic adjuncts

  • Examples:
    • Laser sclerotherapy / laser temperature sclerotherapy
      • Optical fiber inserted into fistula
      • Laser applied, then withdrawn to cauterize tract
      • Described as minimally invasive and highly effective
    • WAFT technique
      • Uses a fistuloscope
      • Laser and/or sclerosing agents can be used inside the fistula

LIFT technique (trans-sphincter repair)

Goal:

  • Avoid damaging internal/external sphincters to reduce incontinence risk.

Steps described:

  • Enter via anal mucosa at the junction with skin
  • Make ~1–2 cm incision
  • Dissect through the intersphincteric space
  • Reach tract marked by a previously placed stent
  • Ligate both ends of the tract and section it
  • Close without injuring sphincters

Outcomes mentioned:

  • Recurrence rate <20% when done correctly

Modifications noted:

  • LIFT combined with fistulectomy of the distal part
  • Possible mucosal flap accompaniment
  • Another attempted variant mentioned:
    • Leaving a seton as part of some LIFT variants, but it “fails quite often”

Rare but emphasized complication: anal incontinence risk

  • Discussed in severe infections/necrosis where sphincters may be destroyed:
    • If sphincters are destroyed, the anus cannot close normally
    • Can cause continuous gas/stool leakage and major quality-of-life impact
  • Treatment described as difficult:
    • Effective anal canal reconstruction not achieved per subtitles
    • Partial improvements attempted (e.g., botulinum toxin injections) but not full success

Speakers / sources featured

  • Dr. Echevarria (main lecturer; appears as “Dr Echevarría”)

Named classifications / contributors mentioned (as references)

  • Goligher classification (internal hemorrhoid grading)
  • Milligan–Morgan (open hemorrhoidectomy technique)
  • Ferguson (closed hemorrhoidectomy technique)
  • Rey Neto and Parx (buried technique variants)
  • Whitehead
  • Goodsall’s rule (fistula complexity rule)
  • LIFT (trans-sphincter repair technique)

No other distinct speaking individuals are clearly identified in the subtitles.

Original video