ArticleAbdominal radiology (New York)2025
Small pancreatic ductal adenocarcinoma (≤ 2 cm): different imaging and clinicopathologic features according to extrapancreatic extension.
Article in Abdominal radiology (New York), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Extrapancreatic extension exhibits tumor size-dependent prognostic impact in pancreatic cancer.Scientific reports · 2026Article
- Article
- Circulating tumor DNA-guided early detection and minimal residual disease monitoring in pancreatic and biliary cancers: evidence, barriers, and opportunities.World journal of surgical oncology · 2026Review
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4 authors.
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Abstract
purposeTo assess features of small pancreatic ductal adenocarcinoma (s-PDA, ≤ 2 cm) according to extrapancreatic extension (EPE) and predictors for recurrence.
methodsThis retrospective study included patients diagnosed with s-PDA who underwent surgery between January 2004 and October 2021. Preoperative CT or MRI images were reviewed by two reviewers. Imaging and clinicopathologic features of s-PDA were compared according to the presence of EPE. Cox regression analyses were performed to identify predictors of recurrence.
results142 patients (77 men; 64.7 ± 9.3 years) who underwent preoperative CT (n = 134) or MRI (n = 115) were included. Duct dilatation was a common imaging finding of s-PDA (CT: 75.4%, MRI: 82.6%). Of the 142 patients, 21.8% (31/142) had no EPE, while 78.2% (111/142) had EPE. Tumor size on CT (14.3 ± 8.7 mm vs. 18.2 ± 6.5 mm, p =.01) and abutment or encasement of superior mesenteric vein (13.8% vs. 40.9%, p =.02) on CT were different according to absence or presence of EPE. Recurrence was more common in s-PDA with EPE (32.3% [10/31] vs. 53.2% [59/111], p =.04). Pathologic tumor size (HR 1.103, 95% CI 1.020-1.193, p =.01), tumor size on MRI (HR 1.044, 95% CI 1.001-1.090, p =.048), and extrapancreatic neural invasion on MRI (HR 3.341, 95% CI 1.564-7.140, p =.002) were significant predictors of recurrence.
conclusionEven in s-PDA, tumors with EPE are larger and show higher recurrence rates. Imaging features are important for predicting presence of EPE.
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