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Constipation, failure to thrive and recurrent abscesses: getting to the bottom of an unusual complaint
  1. Peter Mallett1,
  2. Caroline Hart1,
  3. Josip Marjanovic2,
  4. Damian Maguire3,
  5. Majella McCullagh3,
  6. Andrew Thompson1
  1. 1 Department of Paediatric Education and Simulation, Royal Belfast Hospital for Sick Children, Belfast, UK
  2. 2 Department of Paediatric Radiology, Royal Belfast Hospital for Sick Children, Belfast, UK
  3. 3 Department of Paediatric Surgery, Royal Belfast Hospital for Sick Children, Belfast, UK
  1. Correspondence to Dr Peter Mallett, Department of Paediatric Education & Simulation, Royal Belfast Hospital for Sick Children, Belfast, UK; pmallett01{at}qub.ac.uk

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A female infant was born in good condition at term. Meconium was passed within the first 48 hours of life. At 3 weeks of age, she presented with constipation and a presumed isolated buttock abscess requiring drainage. Inspection of the perianal area was felt to be normal. A large volume of pus was drained and she was discharged home on oral antibiotics.

Question 1

Which procedure may have been most appropriate to offer an initial clue to her diagnosis? 

  1. Abdominal X-ray. 

  2. Digital rectal examination. 

  3. Perianal swab for streptococcal infection. 

  4. Sweat test. 

  5. Ultrasound scan of the abdomen.

At 6 months of age, she presented with a second abscess, constipation and poor weight gain.

Question 2

What is the most likely diagnosis? 

  1. Congenital anorectal anomaly. 

  2. Cow’s milk protein allergy. 

  3. Hirschsprung’s disease. 

  4. Immunodeficiency disorder. 

  5. Infantile perianal Crohn’s disease.

Poor weight gain persisted and she re-presented acutely unwell at 9 months of age with a ruptured perianal abscess. Given these recurrent abscesses, with …

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