Compared to patients with CD+AS,
internal fistula was more common in patients with CD.
In our case, an
internal fistula formed between the proximal jejunum and the distal ileum, in addition to the presence of an encapsulated granuloma.
It may be a secondary location from the ileum via
internal fistula [5] or by intestinal peristalsis [6].
Internal fistula as a route of infection in acute suppurative thyroiditis.
In June 1999, he presented with gastrointestinal obstruction and
internal fistula formation, and underwent terminal ileum and ascending colon resection.
Due to nonspecific symptoms, the diagnosis of
internal fistula is difficult (5).