Youcef Guerrache1, Philippe Soyer2, Anthony Dohan3, Sid Ahmed Faraoun4, Valérie Laurent5, Jean-Pierre Tasu6, Christophe Aubé7, Julien Cazejust8, Mourad Boudiaf9, Christine Hoeffel10. 1. Department of Radiology, Centre Pierre et Marie Curie, Place du 1er Mai, 16016 Alger, Algeria. Electronic address: docyoucef05@yahoo.fr. 2. Department of Abdominal Imaging, Hôpital Lariboisière-APHP, 2, rue Ambroise Paré, 75010 Paris, France; Université Paris-Diderot, Sorbonne Paris Cité, 10 Avenue de Verdun, 75010 Paris, France. Electronic address: philippe.soyer@lrb.aphp.fr. 3. Department of Abdominal Imaging, Hôpital Lariboisière-APHP, 2, rue Ambroise Paré, 75010 Paris, France; Université Paris-Diderot, Sorbonne Paris Cité, 10 Avenue de Verdun, 75010 Paris, France. Electronic address: anthony.dohan@lrb.aphp.fr. 4. Department of Radiology, Centre Pierre et Marie Curie, Place du 1er Mai, 16016 Alger, Algeria. Electronic address: faraounsid@yahoo.fr. 5. Department of Radiology, CHU Nancy-Brabois, Allée du Morvan, 54511 Nancy cedex, France. Electronic address: v_croiselaurent@yahoo.fr. 6. Department of Radiology, CHU Poitiers, 2 rue de la Milétrie, 86000 Poitiers, France. Electronic address: Jean-Pierre.TASU@chu-poitiers.fr. 7. Department of Radiology, CHU d'Angers, 4 rue Larrey, 49933 Angers Cedex 9, France. Electronic address: ChAube@chu-angers.fr. 8. Department of Radiology, Hôpital Saint-Antoine, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France. Electronic address: julien.cazejust@sat.aphp.fr. 9. Department of Radiology, Centre Pierre et Marie Curie, Place du 1er Mai, 16016 Alger, Algeria. Electronic address: mourad.boudiaf@lrb.aphp.fr. 10. Department of Radiology, Hôpital Robert Debré, 11 Boulevard Pasteur, 51092 Reims, France. Electronic address: choeffel-fornes@chu-reims.fr.
Abstract
PURPOSE: Solid-pseudopapillary tumor (SPT) of the pancreas is a rare, low-grade malignancy, which mostly occurs in adolescent and young adult females. The goal of this study was to retrospectively analyze the magnetic resonance (MR) imaging presentation of SPT of the pancreas. METHODS: We retrospectively reviewed the preoperative MR imaging examinations and the medical, surgical and histopathological records of 21 patients who underwent surgery for SPT of the pancreas. MR imaging included T1-weighted, T2-weighted, and gadolinium chelate-enhanced MR imaging. In addition, 10 patients had diffusion-weighted (DW) MR imaging. MR examinations were retrospectively reviewed for location, size, morphological features and signal intensity of the tumors. RESULTS: Nineteen women and 2 men (median age, 23 years; range, 14-59) were included. Seven patients (7/21; 33%) presented with abdominal symptoms. The median largest tumor diameter was 53mm (range, 32-141 mm). SPTs were located in the pancreatic head, body, and tail in 9 (9/21; 43%), 5 (5/21; 24%) and 7 (7/21, 33%) patients, respectively. All patients (21/21; 100%) had a single SPT. SPTs were more frequently oval (12/21; 57%), predominantly solid (12/21; 57%), fully encapsulated (16/21; 76%), larger than 30 mm (21/21; 100%), hypointense on T1-weighted MR images (21/21, 100%), hyperintense on T2-weighted MR images (21/21; 100%) and with an enhancing capsule after gadolinium-chelate administration (21/21; 100%). CONCLUSIONS: There is trend of appearance for SPT of the pancreas on MR imaging but that variations may be observed in a number of cases. SPT uniformly presents as a single, well-demarcated and encapsulated pancreatic mass.
PURPOSE: Solid-pseudopapillary tumor (SPT) of the pancreas is a rare, low-grade malignancy, which mostly occurs in adolescent and young adult females. The goal of this study was to retrospectively analyze the magnetic resonance (MR) imaging presentation of SPT of the pancreas. METHODS: We retrospectively reviewed the preoperative MR imaging examinations and the medical, surgical and histopathological records of 21 patients who underwent surgery for SPT of the pancreas. MR imaging included T1-weighted, T2-weighted, and gadolinium chelate-enhanced MR imaging. In addition, 10 patients had diffusion-weighted (DW) MR imaging. MR examinations were retrospectively reviewed for location, size, morphological features and signal intensity of the tumors. RESULTS: Nineteen women and 2 men (median age, 23 years; range, 14-59) were included. Seven patients (7/21; 33%) presented with abdominal symptoms. The median largest tumor diameter was 53mm (range, 32-141 mm). SPTs were located in the pancreatic head, body, and tail in 9 (9/21; 43%), 5 (5/21; 24%) and 7 (7/21, 33%) patients, respectively. All patients (21/21; 100%) had a single SPT. SPTs were more frequently oval (12/21; 57%), predominantly solid (12/21; 57%), fully encapsulated (16/21; 76%), larger than 30 mm (21/21; 100%), hypointense on T1-weighted MR images (21/21, 100%), hyperintense on T2-weighted MR images (21/21; 100%) and with an enhancing capsule after gadolinium-chelate administration (21/21; 100%). CONCLUSIONS: There is trend of appearance for SPT of the pancreas on MR imaging but that variations may be observed in a number of cases. SPT uniformly presents as a single, well-demarcated and encapsulated pancreatic mass.
Authors: Najwa Al Ansari; Miguel Ramalho; Richard C Semelka; Valeria Buonocore; Silvia Gigli; Francesca Maccioni Journal: World J Radiol Date: 2015-11-28