Korean J Urol.  2008 May;49(5):461-463. 10.4111/kju.2008.49.5.461.

Lymphoepithelioma-like Carcinoma of the Renal Pelvis

• Hahm YI
• Yim SJ
• Sim YJ
• Park KS
• Son JH
• Kwon CH
• Park HJ
• Joo KJ

• KMID: 1204530
• DOI: http://doi.org/10.4111/kju.2008.49.5.461

Abstract

Lymphoepithelioma was originally described as a neoplasm in the nasopharynx. Tumors with histologic features similar to those of nasopharyngeal lymphoepithelioma have been identified in anatomic sites other than the nasopharynx, such as the salivary gland, lung, thymus and stomach; these tumors have been termed lymphoepithelioma-like carcinoma(LELC). The etiology and pathogenesis of this neoplasm in the renal pelvis is not clear. We have experienced a case of lymphoepithelioma-like carcinoma of the renal pelvis and we report here on this along with a brief review of the relevant literature.

Keyword

Lymphoepithelioma; Lymphoepithelioma-like carcinoma; Renal pelvis

Figure

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  Fig. 1 CT scan demonstrates a 4×3 cm tumor in the dilated right renal pelvis.

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  Fig. 2 Low power view (left) showing the abundant infiltrated CD3 positive T cells between the tumor cells. On the high power view (right), the tumor cells are pleomorphic with vesicular nuclei and prominent nucleoli.

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  Fig. 3 In contrast with the CD3 positive T cells, the CD20 positive B cells are sparsely infiltrated between the tumor cells.

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