Solid and papillary epithelial neoplasm of the pancreas: MR imaging and pathologic correlation.

Abstract

Correlation of magnetic resonance (MR) imaging findings and those at pathologic evaluation was attempted in six cases of solid and papillary epithelial neoplasm of the pancreas. All patients were female, and the mean patient age was 26 years (range, 13-73 years). On T1-weighted spin-echo images, tumors were well demarcated, and areas of high signal intensity were evident within them. At macroscopic examination, these areas corresponded to solid portions with marked hemorrhagic necrosis or cystic portions filled with hemorrhagic debris. In three of four masses surrounded by macroscopically evident fibrous capsules, a rim of low intensity was revealed at T1-weighted imaging. When T1-weighted spin-echo imaging reveals obvious areas of high intensity within a sharply marginated tumor of the pancreas, especially in a young woman, solid and papillary epithelial neoplasm might be a primary diagnostic consideration.

Solid pseudopapillary carcinoma of the pancreas: differentiation from benign solid pseudopapillary tumour using CT and MRI

“…Areas of high signal intensity on T1-weighted images and low or inhomogeneous signal intensity on T2-weighted images can help identify blood products. 13 In the present study, benign SPT of the pancreas demonstrates similar CT and MRI features to those just described. Imaging features of pancreatic SPC also demonstrate a well-encapsulated lesion with variable degrees of haemorrhagic degeneration ranging from solid to completely cystic components.…”

Pancreatoblastoma in Adults: A Review of the Literature

“…However, aggressive behavior in these tumors is rare [10] . Solid pseudopapillary tumor does not have central calcification and is mainly found in teenage girls; it is predominantly cystic in many cases and does not express AFP, whose production is closely linked to acinar differentiation [23][24][25] . These features may help to distinguish it from pancreatoblastoma.…”

Papillary cystic neoplasm of the pancreas: Radiological findings

“…1B). The MRI pattern is characterized by an isointense or slightly hypointense mass, versus the pancreatic parenchyma in the Tl-weighted sequences, being slightly hyperintense in the T2-weighted sequences [2]. These features are very similar to those of the nonfunctioning islet cell tumor, from which the solid PCN cannot be differentiated most of the time [3,15].…”

“…3); they are thus undistinguishable from the other cystic masses of the pancreas, including mucinous cystadenomas [2,3,9]. In this event, the MRI demonstration of blood content does not provide further information as mucinous tumors reveal similar features [6].…”

“…These lesions mainly involve young female patients; male patients are affected in only 5% of cases [1][2][3][4][5][6]. The tumor is characterized by great structural variability, with necrosis and hemorrhaging being nearly always present within the mass.…”