Korean J Urol.  2007 Aug;48(8):878-880. 10.4111/kju.2007.48.8.878.

Primary Renal Plasmacytoma

• Park SY
• Lee JW
• Son YW
• Moon HS
• Park MH
• Lee TY

• KMID: 2061285
• DOI: http://doi.org/10.4111/kju.2007.48.8.878

Abstract

Extramedullary plasmacytoma is a rare malignancy, composed of plasma cell dyscrasias localized to an extramedullary site in the soft tissue. The great majority of extramedullary plasmacytoma occurs in the head and neck region, mainly in the upper respiratory tract and oral cavity. Extramedullary plasmacytoma arising in the kidney, termed a primary renal plasmacytoma, is a very rare malignancy. Primary renal plasmacytoma is not distinguished from a renal cell or transitional cell carcinoma using conventional imaging studies. The diagnosis of a primary renal plasmacytoma is only made on histopathological examination. Herein, a case of primary renal plasmacytoma, in a 39-year-old male patient, is reported.

Keyword

Plasmacytoma; Kidney neoplasms

MeSH Terms

Adult
Carcinoma, Transitional Cell
Diagnosis
Head
Humans
Kidney
Kidney Neoplasms
Male
Mouth
Neck
Paraproteinemias
Plasmacytoma*
Respiratory System

Figure

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  Fig. 1 Abdominal CT scan showing an exophytic mass in the left kidney.

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  Fig. 2 Gross surgical specimen. In the sectional view, a well circumscribed grayish-white mass is seen in the mid-portion of the left kidney.

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  Fig. 3 The tumor is composed of lymphoplasmacytic cells, with diffuse plasmacytoid differentiation, showing eccentric nuclei, eosinophilic cytoplasm and Dutcher bodies (white arrow) (Hematoxylin and Eosin, ×400).

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  Fig. 4 (A) Abdominal CT scan showing a 10 cm sized enhancing mass in the left retroperitoneal cavity and a 3 cm sized enhancing mass in the cecum. (B) Lumbar magnetic resonance imaging showing an intrathecal enhancing mass.

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