Celiac Disease in Remission, and an Esophagus That Didn't Get the Message
A single patient whose celiac disease is objectively controlled and whose esophagus is inflamed anyway. The disagreement is whether to keep hunting for hidden gluten or accept that a second, separate process has shown up in a patient who's already carrying one restrictive diet.
Owen L., now 19, was diagnosed with celiac disease at 12, and by every objective measure his gluten-free diet has worked: his tTG-IgA normalized three years ago and stayed there, and a repeat duodenal biopsy two years ago showed his villi had recovered. A routine workup for mild anemia this year included another endoscopy, and this one found something new — linear furrows in his esophagus and a biopsy showing 30 eosinophils per high-power field, comfortably over the threshold for eosinophilic esophagitis. His duodenum, sampled in the same procedure, looked exactly as it has for two years: no new villous damage, nothing suggesting his celiac disease has quietly reactivated.
The genuine ambiguity is what to make of an esophagus behaving badly in a small bowel that's behaving fine. One reading treats this as covert, incomplete gluten avoidance — a hidden cross-contamination source his dietitian hasn't found yet, with the esophageal finding as collateral damage from an underlying process his serology and duodenal biopsy simply haven't caught up to registering. The competing reading treats his EoE as a genuinely separate diagnosis, though its most-quoted number is weaker than it sounds. Thompson and colleagues reported a roughly sixteen-fold standardized incidence ratio for EoE among celiac patients — but from a single celiac referral center's own database, the setting where patients get scoped far more often than the population they were compared against. A later nationwide register-based cohort put it closer to sixfold, and found it vanished when patients were compared with their own siblings. What survives is a co-occurrence worth looking for rather than a strong causal link, and Owen's normalized tTG-IgA with stable villi remains a specific signal that whatever is happening in his esophagus isn't the process his gluten-free diet was built to control. Owen, for his part, has been rigorously gluten-free for seven years and does not want to hear that the answer is a second restrictive diet layered on the one he's already mastered.
The anemia that triggered this whole workup is itself a small piece of evidence worth reading rather than setting aside. Iron-deficiency anemia is common enough in celiac disease on its own that nobody initially treated it as suspicious, but the more he's been asked about it, the more Owen describes a recent pattern of intermittent, ordinary-seeming food avoidance — skipping bread at restaurants when he's unsure how it was prepared, an old, cautious habit from before his diet was as reliably controlled as it is now. Whether that's residual anxiety from years of vigilance or an early, half-conscious response to genuine esophageal discomfort is exactly the kind of detail neither serology nor a biopsy can resolve on its own.
One diet, two organs, and a disagreement about which one is telling the truth
Before we call this a second diagnosis, I want a real dietary audit — cross-contamination sources, shared kitchen equipment, restaurant habits, the things a seven-year veteran patient can start taking for granted. Normal serology doesn't rule out a small, persistent exposure.
I'd point to the pattern itself, though. His duodenum looks exactly like it has for two years — no new villous damage — at the same time his esophagus is actively inflamed. A hidden gluten exposure significant enough to cause 30 eosinophils per high-power field in his esophagus would be a strange one to leave his small bowel completely untouched.
I understand wanting to exhaust the dietary explanation first, but the discordance between the two organs is itself real evidence, not just an argument from absence — it’s not that we haven’t found the exposure yet, it’s that the organ his diet is supposed to protect looks fine.
I'd rather not ask Owen to relitigate seven years of a diet he's clearly mastered, or commit him to a second lifelong restriction, before trying something that answers the question directly. A topical steroid trial does both jobs at once — if his esophagus clears, that's real evidence this is EoE responding to EoE-directed therapy, independent of whatever the dietary audit finds.
That doesn't make the dietary review pointless — it should still happen. It just means Owen doesn't have to wait on its outcome before starting something that's likely to help regardless of which explanation turns out right.
Agreed: start a 12-week budesonide oral suspension trial with repeat esophageal biopsy at the end, and refer separately to the dietitian for a full cross-contamination review running in parallel, not sequentially.
Not agreed, and named directly:
The allergist would treat this as confirming a genuinely separate EoE diagnosis, regardless of what the dietary review turns up.
The gastroenterologist would still want the dietary review's findings before closing the question, on the reasoning that a steroid response doesn't rule out an overlooked exposure existing alongside it.
Both tracks are running now, in parallel rather than one gating the other, and what a clean steroid response would actually prove is left open rather than pre-agreed.