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Magnetic Resonance Imaging versus Computed Tomography for Biliary Tract Intraductal Papillary Mucinous Neoplasm
Jing Li1, Yuanlin Yu1, Lulong Zhu1
1Department of Medical Imaging, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China (mainland).
Abstract:
BACKGROUND In most cases, biliary tract intraductal papillary mucinous neoplasm (BT-IPMN) is depicted by pathological features rather than on imaging modalities, but fine-needle aspiration cytology cannot provide complete information on tumor(s). Computed tomography (CT) has the advantage of high spatial resolution and multiplanar capabilities, while magnetic resonance imaging (MRI) has greater contrast resolution than CT. The purpose of this study was to compare the diagnostic performance of CT vs. MRI for the diagnosis of BT-IPMN using surgical pathology as the reference standard. MATERIAL AND METHODS Data from CT, MRI, and surgical pathology of 210 patients with complaints of abdominal discomfort, vomiting, and/or jaundice for at least 6 months were included in the analysis. Intra-observer agreements for diagnosis of neoplasm was evaluated by kappa statistics. RESULTS CT and MRI respectively detected 171 and 33 patients with BT-IPMN, 6 and 176 with biliary intraductal tubulopapillary neoplasms (BT-ITPN), and 28 and 6 with inconclusive results. Surgical pathology reported 179 patients with BT-IPMN and 25 patients with BT-ITPN. CT and MRI both had the same accuracy (97.14%) for BT-IPMN. The sensitivities for diagnosis of BT-IPMN were 87.75%, 83.81%, and 81.43% for the surgical pathology, MRI, and CT, respectively. Intra-observer agreements for diagnosis of neoplasm were substantial (k=0.79), perfect (k=0.81), and perfect (k=0.85) for CT, MRI, and surgical pathology, respectively. CONCLUSIONS MRI appears to be a more accurate and reliable method than CT for depicting BT-IPMN.
Insights
Magnetic resonance imaging (MRI) is more accurate than computed tomography (CT) for diagnosing biliary tract intraductal papillary mucinous neoplasm (BT-IPMN). This study compared CT and MRI performance against surgical pathology in 210 patients.
Area of Science:
- Gastroenterology
- Radiology
- Oncology
Background:
- Biliary tract intraductal papillary mucinous neoplasm (BT-IPMN) diagnosis often relies on pathology, as imaging and cytology have limitations.
- Computed tomography (CT) offers high spatial resolution, while magnetic resonance imaging (MRI) provides superior contrast resolution.
- Accurate imaging is crucial for diagnosing BT-IPMN, a condition presenting with symptoms like abdominal discomfort, vomiting, and jaundice.
Purpose of the Study:
- To compare the diagnostic performance of CT versus MRI for BT-IPMN.
- To establish surgical pathology as the reference standard for evaluating imaging modalities.
- To assess the reliability of CT and MRI in differentiating BT-IPMN from other biliary neoplasms.
Main Methods:
- Retrospective analysis of CT, MRI, and surgical pathology data from 210 patients.
- Patients presented with at least six months of abdominal discomfort, vomiting, and/or jaundice.
- Intra-observer agreement for neoplasm diagnosis was assessed using kappa statistics.
Main Results:
- Both CT and MRI demonstrated high accuracy (97.14%) for BT-IPMN diagnosis.
- MRI sensitivity (83.81%) and CT sensitivity (81.43%) were comparable to surgical pathology (87.75%).
- MRI showed superior performance in detecting BT-IPMN compared to CT, with higher detection rates for BT-IPMN (176 vs 33) and fewer inconclusive results (6 vs 28).
Conclusions:
- MRI is a more accurate and reliable imaging modality than CT for depicting BT-IPMN.
- The study highlights MRI's advantage in contrast resolution for diagnosing biliary neoplasms.
- High intra-observer agreement for both CT (k=0.79) and MRI (k=0.81) supports their diagnostic utility.
