Abstract
Background
There is relatively scarce data on the computed tomography (CT) detection of gastrointestinal (GI) involvement in gallbladder cancer (GBC). We aim to assess the GI involvement in GBC on CT and propose a CT-based classification.
Methods
This retrospective study comprized consecutive patients with GBC who underwent contrast-enhanced computed tomography (CECT) for staging between January 2019 and April 2022. Two radiologists evaluated the CT images independently for the morphological type of GBC and the presence of GI involvement. GI involvement was classified into probable involvement, definite involvement and GI fistulization. The incidence of GI involvement and the association of GI involvement with the morphological type of GBC was evaluated. In addition, the inter-observer agreement for GI involvement was assessed.
Results
Over the study period, 260 patients with GBC were evaluated. Forty-three (16.5%) patients had GI involvement. Probable GI involvement, definite GI involvement and GI fistulization were seen in 18 (41.9%), 19 (44.2%) and six (13.9%) patients, respectively. Duodenum was the most common site of involvement (55.8%), followed by hepatic flexure (23.3%), antropyloric region (9.3%) and transverse colon (2.3%). There was no association between GI involvement and morphological type of GBC. There was substantial to near-perfect agreement between the two radiologists for the overall GI involvement (k = 0.790), definite GI involvement (k = 0.815) and GI fistulization (k = 0.943). There was moderate agreement (k = 0.567) for probable GI involvement.
Conclusion
GBC frequently involves the GI tract and CT can be used to categorize the GI involvement. However, the proposed CT classification needs validation.
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Data availability
All data related to the manuscript has been provided in the manuscript.
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RS, SV, PG, MC, PR: data acquisition, analysis, initial draft, revision and final approval. AG, CKD, PG, UNS, TDY, VG, LK, HS, SI, UD, MSS: data acquisition, revision and final approval.
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The study was approved by the PGIMER Institute Ethics Committee (IEC-INT/2022/Study-460).
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RS, SV, PG, MC, PR, AG, CKD, PG, UNS, TDY, VG, LK, HS, SI, UD and MSS declare that they have no conflict of interest.
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Soundararajan, R., Vanka, S., Gupta, P. et al. Gastrointestinal involvement in gallbladder cancer: Computed tomography findings and proposal of a classification system. Indian J Gastroenterol 42, 708–712 (2023). https://doi.org/10.1007/s12664-023-01388-y
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DOI: https://doi.org/10.1007/s12664-023-01388-y