Radiology, Vol 202, 166-172, Copyright © 1997 by Radiological Society of North America

ARTICLES

Splenic hemangiomas and hamartomas: MR imaging characteristics of 28 lesions

M Ramani, C Reinhold, RC Semelka, ES Siegelman, L Liang, SM Ascher, JJ Brown, RN Eisen and PM Bret
Department of Diagnostic Radiology, Montreal General Hospital, McGill University, Quebec, Canada.

PURPOSE: To determine the magnetic resonance (MR) imaging features of splenic hemangiomas and hamartomas, including their pattern of dynamic contrast material enhancement. MATERIALS AND METHODS: The appearance of 28 lesions in 18 patients was retrospectively reviewed on T2-weighted images (16 patients), unenhanced T1-weighted images (18 patients), and dynamic contrast-enhanced T1-weighted images (17 patients). Seventeen of 23 hemangiomas and all five hamartomas were proved at pathologic examination. RESULTS: Of the 22 hemangiomas imaged with T2-weighting, 19 were hyperintense, two were isointense, and one was hypointense relative to the spleen. Dynamic gadolinium-enhanced imaging demonstrated a progressive centripetal pattern of enhancement in 19 of 22 hemangiomas. On delayed images, 19 hemangiomas demonstrated uniform enhancement. Of the five hamartomas, four were imaged with T2- weighting; three were hyperintense and one was hypointense relative to the spleen. All hamartomas demonstrated diffuse heterogeneous enhancement on images obtained early after administration of contrast material and became more uniformly enhanced on delayed images. CONCLUSION: Splenic hemangiomas showed signal intensity characteristics and enhancement patterns similar to those described for hepatic hemangiomas. Since these features have been shown to reliably distinguish hemangiomas from other benign and malignant liver lesions, it may be reasonable to consider without histologic verification that lesions in the spleen with these imaging features represent hemangiomas.

This article has been cited by other articles:

				A. Luna, R. Ribes, P. Caro, L. Luna, E. Aumente, and P. R. Ros MRI of focal splenic lesions without and with dynamic gadolinium enhancement. Am. J. Roentgenol., June 1, 2006; 186(6): 1533 - 1547. [Abstract] [Full Text] [PDF]

				A. C. Silva AJR Teaching File: Enlarging Splenic Mass After Nephrectomy Am. J. Roentgenol., June 1, 2006; 186(6_Supplement_1): S449 - S451. [Full Text] [PDF]

				K. M. Elsayes, V. R. Narra, G. Mukundan, J. S. Lewis Jr, C. O. Menias, and J. P. Heiken MR Imaging of the Spleen: Spectrum of Abnormalities RadioGraphics, July 1, 2005; 25(4): 967 - 982. [Abstract] [Full Text] [PDF]

				W. M. Thompson, A. D. Levy, N. S. Aguilera, L. Gorospe, and R. M. Abbott Angiosarcoma of the Spleen: Imaging Characteristics in 12 Patients Radiology, April 1, 2005; 235(1): 106 - 115. [Abstract] [Full Text] [PDF]

				U. Metser, E. Miller, A. Kessler, H. Lerman, G. Lievshitz, R. Oren, and E. Even-Sapir Solid Splenic Masses: Evaluation with 18F-FDG PET/CT J. Nucl. Med., January 1, 2005; 46(1): 52 - 59. [Abstract] [Full Text] [PDF]

				R. M. Abbott, A. D. Levy, N. S. Aguilera, L. Gorospe, and W. M. Thompson From the Archives of the AFIP: Primary Vascular Neoplasms of the Spleen: Radiologic-Pathologic Correlation RadioGraphics, July 1, 2004; 24(4): 1137 - 1163. [Abstract] [Full Text] [PDF]

				J. C. Vilanova, J. Barcelo, J. G. Smirniotopoulos, R. Perez-Andres, M. Villalon, J. Miro, F. Martin, J. Capellades, and P. R. Ros Hemangioma from Head to Toe: MR Imaging with Pathologic Correlation RadioGraphics, March 1, 2004; 24(2): 367 - 385. [Abstract] [Full Text] [PDF]

				J. M. Calvo-Romero Magnetic Resonance Imaging in Primary Lymphoma of the Spleen Arch Intern Med, June 12, 2000; 160(11): 1706 - 1707. [Full Text] [PDF]

				A. Paterson, D. P. Frush, L. F. Donnelly, J. N. Foss, S. M. O'Hara, and G. S. Bisset III A Pattern-oriented Approach to Splenic Imaging in Infants and Children RadioGraphics, November 1, 1999; 19(6): 1465 - 1485. [Abstract] [Full Text] [PDF]