# Synchronous Intestinal Tuberculosis and Ulcerative Colitis: A Diagnostic Challenge

**Authors:** Joana Cartucho, Bruno Bonito, B Pena, Catarina Lima Vieira, Carla Fernandes

PMC · DOI: 10.7759/cureus.88132 · Cureus · 2025-07-17

## TL;DR

A patient with intestinal tuberculosis also had ulcerative colitis, showing how these two conditions can be hard to distinguish and treat.

## Contribution

This case highlights the diagnostic difficulty and management of coexisting intestinal tuberculosis and ulcerative colitis.

## Key findings

- Initial diagnosis of intestinal tuberculosis was confirmed through histopathology.
- Persistent symptoms led to the identification of coexisting ulcerative colitis.
- Combination therapy improved the patient's condition significantly.

## Abstract

Intestinal tuberculosis (ITB) is a rare manifestation of extrapulmonary tuberculosis that often mimics inflammatory bowel diseases, particularly ulcerative colitis (UC), complicating the diagnostic process. We report the case of a 54-year-old woman with poorly controlled type 2 diabetes who presented with a five-month history of abdominal pain, diarrhea, bloating, fatigue, and low-grade fever. Initial imaging suggested features consistent with inflammatory bowel disease (IBD), and colonoscopy revealed mucosal ulcerations. Histopathological examination confirmed a diagnosis of ITB, and the patient was started on standard anti-tuberculous therapy. However, clinical improvement remained limited. A follow-up colonoscopy six months later demonstrated persistent inflammatory changes, raising suspicion of a coexisting UC. Initiation of mesalamine therapy resulted in significant symptom resolution. This case underscores the diagnostic challenge posed by overlapping gastrointestinal pathologies such as ITB and UC. Timely recognition of coexisting conditions is critical for guiding appropriate treatment and optimizing patient outcomes.

## Linked entities

- **Chemicals:** mesalamine (PubChem CID 4075)
- **Diseases:** intestinal tuberculosis (MONDO:0001678), ulcerative colitis (MONDO:0005101), type 2 diabetes (MONDO:0005148)

## Full-text entities

- **Diseases:** fever (MESH:D005334), diarrhea (MESH:D003967), inflammatory (MESH:D007249), abdominal pain (MESH:D015746), type 2 diabetes (MESH:D003924), IBD (MESH:D015212), UC (MESH:D003093), tuberculous (MESH:D014390), fatigue (MESH:D005221), ITB (MESH:D014376)
- **Chemicals:** mesalamine (MESH:D019804)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

_Full body text omitted from this summary view._ Fetch the complete paper as Markdown: https://tomesphere.com/paper/PMC12357118/full.md

## Figures

7 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12357118/full.md

## References

9 references — full list in the complete paper: https://tomesphere.com/paper/PMC12357118/full.md

---
Source: https://tomesphere.com/paper/PMC12357118