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Urol Oncol. 2013 Oct;31(7):1386-94. doi: 10.1016/j.urolonc.2011.08.006. Epub 2011 Oct 4.

Lymph vessel density in seminomatous testicular cancer assessed with the specific lymphatic endothelium cell markers D2-40 and LYVE-1: correlation with pathologic parameters and clinical outcome.

Author information

  • 1Department of Urology, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany. Electronic address: julia.heinzelbecker@umm.de.

Abstract

OBJECTIVES:

To evaluate the role of lymph vessel density (LVD) and lymphangiogenesis in seminomatous testicular cancer (STC) by using the lymphatic endothelial cell (LEC) markers LYVE-1 and D2-40.

METHODS AND MATERIALS:

Paraffin embedded tumor specimens from 40 patients with STC were stained by specific D2-40 and Lyve-1 antibodies. LVD was measured in different representative and standardized areas. Fluorescence double immunostaining for Lyve-1 and Ki-67 was performed and results were correlated with clinicopathologic data. The median follow-up period was 55 (range 10-135) months.

RESULTS:

Mean intratumoral LVD (D2-40: 1.30 ± 1.99; Lyve-1: 1.82 ± 2.34) was significantly lower than peritumoral LVD (D2-40: 4.94 ± 2.58; Lyve-1: 4.62 ± 2.73) and LVD in nontumoral areas (D2-40: 4.81 ± 3.79; Lyve-1: 4.22 ± 3.19). There was no significant difference between LVD measures when using D2-40 or LYVE-1. Detection rates of lymphatic vascular invasion (LVI) were significantly higher than in conventional HE-stained sections (77.5% vs. 52.5%). No proliferating lymphatic vessels were found.

CONCLUSIONS:

We found that LVD is decreased within tumor areas of STC. Despite a higher peritumoral LVD, no signs of proliferating endothelial cells were observed, suggesting a lack of lymphangiogenesis in STC. Detection of LVI can be optimized by specific D2-40 or LYVE-1 staining.

Copyright © 2013 Elsevier Inc. All rights reserved.

KEYWORDS:

Lymph vessel density; Lymphangiogenesis; Metastasis; Seminomatous testicular cancer

PMID:
21974896
[PubMed - indexed for MEDLINE]
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