An outcome-based composite approach for the diagnosis of intestinal tuberculosis : a pilot study from a tertiary care centre in South India

BACKGROUND: The diagnosis of intestinal TB (ITB) is challenging because of its overlapping features with Crohn's disease. This outcome-based study evaluated the combination of colonoscopy, histopathology, Xpert MTB/RIF and TB culture for best sensitivity and specificity.

METHOD: This was a four-year retrospective, observational study of 426 clinically suspected patients who underwent colonoscopy with biopsies for histopathology, Xpert MTB/RIF and TB culture. ITB was diagnosed using the composite reference standard (CRS), which comprised either histological features or culture or Xpert MTB/RIF positivity, and positive response to anti-tuberculous treatment on follow up.

RESULTS: 35 (8.2%) patients were diagnosed with ITB. Histopathology had the highest sensitivity (91.4%) and negative predictive value (99.2%), MTB/RIF had the highest specificity (100%) and positive predictive value (100%). A combinatorial approach with Xpert MTB/RIF and histopathology had optimal diagnostic value (97%), approaching 100% sensitivity with culture. 40% of cases were diagnosed within 12 hours with Xpert MTB/RIF and 97% cases within three days.

CONCLUSION: This combinatorial diagnostic model provides rapid and reliable diagnosis of ITB which may be useful in endemic areas.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:51

Enthalten in:

The journal of the Royal College of Physicians of Edinburgh - 51(2021), 4 vom: 22. Dez., Seite 344-350

Sprache:

Englisch

Beteiligte Personen:

Paulose, Roopa Rachel [VerfasserIn]
Kumar, V Anil [VerfasserIn]
Sharma, Aparna [VerfasserIn]
Damle, Aditi [VerfasserIn]
Saikumar, Divya [VerfasserIn]
Sudhakar, Abish [VerfasserIn]
Koshy, Anoop K [VerfasserIn]
Damle, Rama P Venu P [VerfasserIn]

Links:

Volltext

Themen:

Colonoscopy
Crohn’s disease
Histopathology
Intestinal tuberculosis
Journal Article
Observational Study
TB culture
Xpert MTB/RIF

Anmerkungen:

Date Completed 26.01.2022

Date Revised 26.01.2022

published: Print

Citation Status MEDLINE

doi:

10.4997/JRCPE.2021.406

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM334186951