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Pancreatic tumors: evaluation with endoscopic US, CT, and MR imaging.
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1994
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The study compares the diagnostic performance of endoscopic ultrasound, dynamic CT, and MR imaging for pancreatic tumors. Forty‑nine patients suspected of pancreatic tumors underwent endoscopic US, CT, and MR imaging, with final diagnoses established by surgery, biopsy, or follow‑up. Endoscopic US achieved higher sensitivity (94 %), specificity (100 %), and accuracy (96 %) than CT (69 %, 64 %, 67 %) and MR (83 %, 100 %, 84 %), especially for tumors <3 cm where US sensitivity was 93 % versus 53 % for CT and 67 % for MR.
PURPOSE: To compare the value of endosonography (endoscopic ultrasound [US]), dynamic computed tomography (CT), and magnetic resonance (MR) imaging in the evaluation of pancreatic tumors. MATERIALS AND METHODS: Forty-nine consecutive patients with clinical suspicion of pancreatic tumor underwent endoscopic US (n = 49), CT (n = 46), and MR imaging (n = 25). The final diagnosis of a malignant (n = 22), benign (n = 2), or inflammatory (n = 9) tumor, or no (n = 16) tumor was made at surgery (n = 28) and/or a combination of biopsy (n = 9) and 9-24-month follow-up (n = 12). RESULTS: The sensitivity was 94% for endoscopic US, 69% for CT, and 83% for MR imaging. Specificity was 100% for endoscopic US, 64% for CT, and 100% for MR imaging. Accuracy was 96% for endoscopic US, 67% for CT, and 84% for MR imaging. The sensitivity for the detection of tumors less than 3 cm in diameter was 93% for endoscopic US (n = 15), 53% for CT (n = 15), and 67% for MR imaging (n = 12). CONCLUSION: Endoscopic US is more accurate than dynamic CT and MR imaging in the diagnosis of pancreatic tumor, particularly for tumors less than 3 cm in diameter.