
New research underscores the need for public health interventions to improve the microbial and fiber content of diets in the US.
What would your diagnosis be in this young man and how would that inform your next step?
A 28-year-old man with Crohn colitis on maintenance therapy with infliximab 5 mg/kg every 8 weeks presents with perianal pain. On examination, he has a 1-cm tender lesion with fluctuance near the anus.
Which of the following should be the next step in management?