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Chung, Kang, Kim, Choo, Kim, Seong, and Yoon: Extramedullary Plasmacytoma of the Retroperitoneum
Case Report
Korean Journal of Urology

Korean Journal of Urology 2006; 47(1): 105-107.

Published online: 31 January 2006

DOI: https://doi.org/10.4111/kju.2006.47.1.105

Extramedullary Plasmacytoma of the Retroperitoneum

Jae-Seung Chung, Seok-Chan Kang, Yong-Jin Kim, Gwoan-Youb Choo, Rusia Kim1, Do-Hwan Seong, Sang-Min Yoon

Department of Urology, Inha University College of Medicine, Incheon, Korea.

1Department of Pathology, Inha University College of Medicine, Incheon, Korea.

Corresponding author (uroyoon@hanmail.net)

Received 5 August 2005       Accepted 16 September 2005

Copyright © 2006 The Korean Urological Association

Abstract

Extramedullary plasmacytoma is an uncommon neoplasm and it occurs most frequently in the upper respiratory tract. Among the extramedullary plasmacytomas, retroperitoneal plasmacytoma is an extremely rare tumor with only about 10 cases having been reported in the world. Herein, we reported on a extramedullary plasmacytoma in the retroperitoneum. A 68-year-old man presented with left flank pain. The initial clinical diagnosis was retroperitoneal tumor. Retroperitoneal tumor mass excision along with left nephrectomy was performed and the histopathology showed plasmacytoma. There was no evidence of multiple myeloma. After the operation, he was treated with radiotherapy and the out-patient department follow-up is going on.

Keywords: Plasmacytoma, Retroperitoneal neoplasms

Figures and Tables

Fig. 1
Contrast-enhanced computed tomography reveals a huge retroperitoneal soft tissue tumor.
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Fig. 2
There is a well demarcated multinodular mass at the medial side of the lower pole of the left kidney. On sectioning, the cut surface of the mass is multinodular with multifocal necrosis. The mass is tightly adhered to the kidney parenchyma, but direct invasion is not seen.
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Fig. 3
Photomicrograph of the retroperitoneal tumor shows sheets of plasma cells having varying degrees of differentiation (hematoxylin and eosin, ×400).
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Fig. 4
Diffuse, bright cytoplasmic staining for lambda light chain in the differentiated plasmacytoma of the retroperitoneum.
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Fig. 5
Computed tomography of the abdomen demonstrates no evidence of recurred mass or distant metastasis.
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References

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