Gastro Flashcards
(57 cards)
DDx for anorectal pain alone?
Anal fissure
Ulcerative proctitis
Anal herpes
Proctalgia fugax
DDx for anal lump without pain
skin tags
anal warts
anal carcinoma
DDx for anal pain and lump
Perianal haematoma
strangulated internal haemorrhoid
Abscess (ischiorectal or perianal)
Pilonidal sinus
Anal pain and bleeding
Proctitis
Anal fissure
Lump and bleeding vs Pain, Lump and Bleeding Ddx?
Anal carcinoma (blood in underwear or toilet paper) - usually painless
Second degree haemorrhoid (spontaneously reducing lump on straining) (lump, bleeding +/- PAIN)
Third degree haemorrohoid (lump prolapsing but reducible)
Fourth degree haemorrhoid
Ulcerated perianal haematoma (blood in underwear)
Anal bleeding (Without lump or pain) DDx
Internal haemorrhoids (bright red bleeding/separate from feces in toilet)
Colorectal carcinoma (blood mixed)
colorectal polyps (blood mixed)
Anal carcinoma
How are external and internal haemorrhoids differentiated?
External occur below the DENTATE line
Symptoms of haemorrhoids?
haematochezia (Bleeding) - Usually PAINLESS
Pain (associated with a thrombosed haemorrhoid)
Perianal pruritis
Faecal soilage
SUSPECT Dx - perianal pruritis, bright rectal bleeding, and/or perianal pain
Examination findings to be sough in a patient with haemorrhoids/suspected haemorrhoids?
Inspection - for fissure (Scarring can suggest partial healing), perianal excoriation, haematoma, prolapsing haemorrhoid, warts, skin tags (hypertrophic in chrons)
Digital rectal examination - palpate for masses, fluctuance, tenderness and characterisation of anal tone
Patients who have suspicion of internal haemorrhoids not detected on DRE require anoscopy/proctoscopy
When do haemorrhoids require endoscopic evaluation?
UNDER 40 - with minimal bleeding and no red flags - no endoscopy
OVER 40 - flexible sigmoidoscopy or colonscopy is performed based up on risk factors for colonic carcinoma
What are the grades of haemorrhoids?
1 - no prolapse, just prominent vessels, only bleeds
- prolapse on bearing down, spontaneously reduces
- prolapses and requires manual reduction.
- Permanent prolapse - cannot be mechanically reduced.
Management of haemorrhoids?
-
Supportive measures
- avoid constipation by increasing fibre in diet and using stool softeners
- avoid straining at stool.
- Responding to urge to defecate but not initiating defecation without the urge - Symptomatic management
a) irritation - warm sitz baths 2-3 times daily, topical analgesic creams, hydrocortisone ointment (no longer than one week)
b) bleeding haemorrhoids - dietary modification, topical creams, if not improving options include rubber band ligation, and surgical management (for external)
c) Pain management (THROMBOSIS is associated with pain)
- conservative treatment is usually sufficient - resorption of clot occuring in several days usually. Where thrombosis is refractory or causing acute severe pain surgery may be indicated
d) Prolapsed internal haemorrhoids (graded 1-4) as grade increases more indication for consideration of definitive surgical management
3. Definitive treatment
Either - rubber band ligation, sclerotherapy, infrared coagulation of internal haemorrhoids
or Surgery
How does a perianal haematoma present?
PAINFUL Tense blue swelling at anal margin
- thrombosed external haemorrhoid
Usually occurs acutely due to straining - heavy lifting, sneezing, coughing - appears as a PAINFUL LUMP
- spontaneous rupture can occur relieving symptoms or resorption can occur in 1-2 weeks.
- IF presents acutely - can be sent to ED to infiltrate local anaesthetic and incision
How does a perianal abcess present? What is the treatment?
obstructed anal crypt gland with pus collection in subcutaneous tissues
Red, tender, painful - can have fever and malaise
Management - Incise and Drain abcess
Oral Augmentin Duo Forte amoxicillin 875+ clavulanic acid 125 orally 12 hourly for five days
Review in 48 hours
if penicillin allergy
Bactrim 160+800 bd for five days and metronidazole 400mg bd for five days
Immunocompromised patients and diabetics may require hospital admission for IV antibiotics
What are common risk factors for pilo nidal sinus disease?
Overweight/obesity
Local trauma or irritation
deep natal cleft
increased hair density in natal cleft
Sedentary/prolonged sitting
FHx
(Can present in patient with no risk factors)
How can pilonidal sinus disease present?
- asymptomatic pilonidal cavity
- sinus
- acute infection
- chronic inflammation and drainage with an open wound of varying size
Acute disease - pain, swelling, mucopurulent discharge, fever, malaise (acute abcess managed with prompt incision and drainage - antibiotics only if cellulitis or systemic symptoms)
Chronic - recurrent or persistent pain or drainage - in rare cases can lead to SCC - chronic disease may require surgical excision
How do anal fissures present?
Acute severe pain, can be present at rest but worse with defecation
most fissures are primary and caused by local trauma from constipation, diarrhoea, vaginal delivery, anal sex
Acute vs Chronic anal fissure?
Acute - less than 8 weeks
chronic - more than 8 weeks
Chronic fissure often accompanied by external skin tag
Management of anal fissure?
- Stool softener if constipated
- Warm sitz baths 2-3 times a day
- Topical Glyceryl trinitrate cream
- Topical analgesic cream
Pathophys of coeliac
HLA-DQ2 and/or DQ8 alleles (Predisposition) + gliadin component of gluten (trigger) = Coeliac disease (enteropathy)
Note - many ppl with the alleles dont get coeliac
ONSET - any age - peak is 30’s and 40’s
Typically a thin patient with minimal subcut fat
What are associations with coeliac disease?
- Other autoimmune diseases - Type 1 DM, thyroid, Pernicious anaemia, Sjogrens, Primary billiary cirrhosis
- Downs Syndrome
- Dermatitis Herpetiformis
- Sub fertility
Clinical manifestations of coeliac disease

Investigations in coeliac disease?
Coeliac antibodies - Tissue Transglutaminase antibody (tTG), deamidated gliadin peptide (DGP)
Total IgA (becaue 2-5% have IgA deficiency which makes their antibody tests unreadable)
and small intestine mucosal biopsy (looking for villous atrophy)
Coeliac antibodies must be performed on at least 6 weeks of gluten containing diet (4 slices of bread/day).
If patient on a gluten free diet already and doesnt want to go off - then buccal smear for HLA DQ8 and DQ2 (or serology)
If positive –> small bowel biopsy
