Post

New research · Radiology
Insights into imaging · 1d
Cohort studyInsights into imaging · 2026

Indeterminate CT reporting of adult acute appendicitis: radiologist versus lexicon-based diagnostic certainty.

Piyachai Siriphiphatcharoen, Rathachai Kaewlai, Sasima Tongsai … Napakadol Noppakunsomboon
Read paper
RadiologyCohort study

Adjudicated CT reports show excellent agreement with final diagnosis.

Indeterminate CT reporting of adult acute appendicitis: radiologist versus lexicon-based diagnostic certainty.

Piyachai Siriphiphatcharoen et al. · Insights into imaging · 2026
Purpose

We also aimed to identify factors associated with indeterminate reporting.

Methods

A total of 983 consecutive CT reports between August 2021 and July 2025 were reviewed.

n = 393 patients
kappa = 0.819-0.838
Results
adjudicated CT reports showed excellent agreement with the final diagnosis
n = 393 patients
More results

Acute appendicitis was confirmed in 393 patients (40%).

Indeterminate reporting occurred in 15.5% of original reports, 12% of adjudicated reports, and 27.9-46.1% of lexicon-based schemes.

Across all approaches, AA prevalence increased consistently with higher diagnostic certainty.

More results

Several CT features were independently associated with indeterminate reporting.

“
Conclusion · 1 of 2

Radiologist-adjudicated impressions conveyed diagnostic certainty more effectively than original reports and lexicon-based schemes, with lower indeterminacy and stronger agreement with the final diagnosis.

Conclusion · 2 of 2

These findings underscore the practical importance of careful wording and judicious use of indeterminate categories when communicating CT findings for suspected adult AA.

Read paper
0 comments

No comments yet. Be the first.

Related papers

LatestFoundational
Review
10-60 mGy
the range of radiation exposure to the baby from belly or pelvis CT scans
Cohort Study
16 min 08 s
PACScrawler was faster at getting medical images than manual methods
Cohort Study
6.7%
Among hereditary hemorrhagic telangiectasia patients re-imaged, 6.7% had clinically significant liver arteriovenous malformations.
AI / Informatics
32.7%
Radiologists reported hepatic steatosis in only 32.7% of scans where AI detected it.
Guideline
“In those instances where peer reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.”
Cross-sectional
56.5%
More than half of computed tomography reports did not mention tumor deposits.
Study
5.24 million
the number of brain scans used to train the new artificial intelligence model
Cohort Study
17.70%
fewer than one in five senior authors in medical imaging research are women