| Title | Differentiation of Benign and Malignant Solid Pseudopapillary Neoplasms of the Pancreas. | | Author(s) | Chung YE, Kim MJ, Choi JY, Lim JS, Hong HS, Kim YC, Cho HJ, Kim KA, Choi SY | | Institution | From the *Department of Diagnostic Radiology, Research Institute of Radiological Science, College of Medicine; and daggerBrain Korea 21 Project and Institute of Gastroenterology, Yonsei University Health System, Seoul, Republic of Korea. | | Source | J Comput Assist Tomogr 2009 September/October; 33(5):689-694. | | Abstract | OBJECTIVE:: The aim of this study was to investigate differential imaging features between benign and malignant solid pseudopapillary neoplasms (SPN) of the pancreas on computed tomographic and magnetic resonance imagings.
METHODS:: Between January 2001 and January 2007, we identified 30 patients with confirmed SPN by surgery. The computed tomographic and magnetic resonance images were reviewed by 3 radiologists in consensus. Each tumor was analyzed for the following categories: location of tumor, tumor margin, proportion of solid component, morphology of capsule, growth pattern, calcification, and presence of upstream pancreatic ductal dilatation.
RESULTS:: Benign SPN usually had oval/round or smoothly lobulated margins, and malignant SPN more commonly had focal lobulated margins (P = 0.027). Presence of complete encapsulation was more frequently seen in benign SPN, whereas focal discontinuity of capsule was more commonly seen in malignant SPN (P = 0.005). There was no statistical difference between benign and malignant tumors in other imaging findings.
CONCLUSIONS:: A focal lobulated margin and a focal discontinuity of the capsule may suggest malignant SPN, whereas a round or smoothly lobulated margin and a complete encapsulation were more commonly seen in benign SPN. | | Language | ENG | | Pub Type(s) | JOURNAL ARTICLE
| | PubMed ID | 19820493 |
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