论文信息 - Contrast-enhanced transabdominal ultrasonography in the diagnosis of pancreatic mass lesions.

Contrast-enhanced transabdominal ultrasonography in the diagnosis of pancreatic mass lesions.

PURPOSE In this study, we evaluated the diagnostic usefulness of contrast-enhanced transabdominal ultrasonography (CE-US) in pancreatic mass lesions that could be detected by US. MATERIAL AND METHODS CE-US was performed in 37 patients with various pancreatic mass lesions to evaluate the characteristic vascular findings. RESULTS Pancreatic tubular adenocarcinoma showed negative enhancement pattern in 16 cases and a slight spotty enhancement pattern in 5 cases. Poorly differentiated adenocarcinoma showed slight homogeneous enhancement pattern in 1 case and acinar cell carcinoma was expressed as a heterogeneous enhancement pattern in 3 cases on CE-US. Endocrine cell tumor had a strong homogeneous enhancement pattern in 3 cases, a strong central enhancement in 1 case and a strong peripheral enhancement in 2 cases. Pseudotumorous pancreatitis showed an iso-enhancement pattern in 6 cases. CONCLUSION CE-US is useful in evaluating the vascularity of the lesions in various pancreatic mass lesions in real-time images, and may be useful for the differential diagnosis of pancreatic mass lesions.

[1] M. Kudo,et al. Contrast-enhanced subtraction harmonic sonography for evaluating treatment response in patients with hepatocellular carcinoma. , 2001, AJR. American journal of roentgenology.

[2] P. Burns,et al. Harmonic hepatic US with microbubble contrast agent: initial experience showing improved characterization of hemangioma, hepatocellular carcinoma, and metastasis. , 2000, Radiology.

[3] K. Koito,et al. Inflammatory pancreatic masses: differentiation from ductal carcinomas with contrast-enhanced sonography using carbon dioxide microbubbles. , 1997, AJR. American journal of roentgenology.

[4] P. Burns. Harmonic imaging with ultrasound contrast agents. , 1996, Clinical radiology.

[5] Y. Hayashi,et al. Clinicopathologic Analysis of Endoscopic Ultrasonograms in Pancreatic Mass Lesions , 1989, Endoscopy.

[6] I. Yabuuchi,et al. Hepatic tumors: US contrast enhancement with CO2 microbubbles. , 1986, Radiology.

[7] T. Shawker,et al. Localizing insulinomas with combined radiographic methods. , 1980, AJR. American journal of roentgenology.

[8] Y. Hirooka,et al. Ultrasonographic and endoscopic ultrasonographic angiography in pancreatic mass lesions. , 1995, Acta radiologica.

[9] L. Traverso,et al. Pancreatic ductal adenocarcinoma: diagnosis and staging with dynamic CT. , 1988, Radiology.

[10] J. Wittenberg,et al. Inflammatory pancreatic masses. Problems in differentiating focal pancreatitis from carcinoma. , 1984, Radiology.