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Kim, Kim, and Kim: CT and MRI Findings of Primary Renal Angiosarcoma with Spontaneous Rupture and Venous Thrombosis: Case Report
Uroradiology
Case Report

Journal of the Korean Society of Radiology 2011; 64(6): 583-586.

Published online: 30 June 2011

DOI: https://doi.org/10.3348/jksr.2011.64.6.583

CT and MRI Findings of Primary Renal Angiosarcoma with Spontaneous Rupture and Venous Thrombosis: Case Report

Young Hwan Kim, M.D., See Hyung Kim, M.D., Young Hwan Kim, M.D.

Department of Radiology, Keimyung University Dongsan Hospital, College of Medicine, Korea.

Address reprint requests to: See Hyung Kim, M.D., Department of Radiology, Keimyung University Dongsan Hospital, 216 Dalsung-ro, Jung-gu, Daegu 700-712, Korea. Tel. 82-53-250-7767, Fax. 82-53-250-7766, kseehdr@dsmc.or.kr

Received 4 March 2011       Accepted 5 April 2011

Copyright © 2011 The Korean Society of Radiology

Abstract

Primary renal angiosarcoma is a very rare malignant mesenchymal tumor. CT shows a well-margined enhancing mass with hemorrhage, perirenal hematoma and renal vein thrombosis in the lower pole of the right kidney. MRI shows heterogeneous low- and high-signal intensities of the mass on T1- and T2-weighted images, as well as a relatively homogeneous enhancement on contrast enhanced T1-weighted images. We report here on a rare case of primary renal angiosarcoma with spontaneous rupture and venous thrombosis.

Keywords: Hemangiosarcoma, Primary Renal Hemangiosarcoma, Tomography, X-Ray Computed, Magnetic Resonance Imaging, Kidney Neoplasms

Figures and Tables

Fig. 1

Non-enhanced axial CT (A) scan shows a low density mass (arrow) with hemorrhage and surrounding perirenal hematoma (arrowhead) in the right kidney. Cortical (B) and early secretory phase (C) scans show gradually and relatively well enhancing mass (arrows) in lower pole of the right kidney. Contrast enhanced coronal CT (D) scan shows a tumoral thrombus (arrow) with well enhancement in proximal portion of the right renal vein.

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Fig. 2

T1- (A) and T2- (B) weighted images show a well-margined heterogeneous low - and high-signal intensity mass (arrows), and hemorrhage within mass and localized hematoma in the perirenal space on T1 weighted image. Contrast enhanced T1- (C) weighted image shows a relatively homogeneous enhancement without cystic and necrotic components.

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Fig. 3

A gross specimen (A) is displaying tan to white colored, entire solid portion with hemorrhage (star), tumor within renal vein (arrows), and perirenal hematoma (arrowhead). Microscopic examination (Haenatoxylin and eosin stain) (B) is revealing irregular vascular spaces, anastomosed, covered by discretely pleomorphic cells, with voluminous and hyperchromatic nuclei. Immunohistochemical is revealing positive neoplastic cell for antibodies of anti-CD31.

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