Abstract:
BACKGROUND:Patients suffering from squamous cell carcinoma of the larynx (LSCC) with lymphatic metastasis have a relatively poor prognosis and often require radical therapeutic management. The mechanisms which drive metastasis to the lymph nodes are largely unknown but may be promoted by a pro-angiogenic tumor microenvironment. In this study, we examined whether the number of microvessels and the expression level of vascular endothelial growth factor (VEGF) in the primary tumor are correlated with the degree of lymph node metastasis (N-stage), tumor staging (T) and survival time in LSCC patients. METHODS:Tissue-Microarrays of 97 LSCC patients were analyzed using immunohistochemistry. The expression of VEGF was scored as intensity of staining (low vs high) and the number of CD31-positive vessels (median ≥7 vessels per visual field) was counted manually. Scores were correlated with N-stage, T-stage and 5-year overall survival rate. RESULTS:A high expression of angiogenic biomarkers was not associated with poor overall survival in the overall cohort of patients. Instead high CD31 count was associated with early stage cancer (p = 0.004) and in this subgroup high VEGF expression correlated with poor survival (p = 0.032). Additionally, in early stage cancer a high vessel count was associated with an increased recurrence rate (p = 0.004). CONCLUSION:Only in the early stage subgroup a high expression of angiogenic biomarkers was associated with reduced survival and an increased rate of recurrence. Thus, biomarkers of angiogenesis may be useful to identify high risk patients specifically in early stage LSCC.
journal_name
BMC Cancerjournal_title
BMC cancerauthors
Schlüter A,Weller P,Kanaan O,Nel I,Heusgen L,Höing B,Haßkamp P,Zander S,Mandapathil M,Dominas N,Arnolds J,Stuck BA,Lang S,Bankfalvi A,Brandau Sdoi
10.1186/s12885-018-4180-5subject
Has Abstractpub_date
2018-03-09 00:00:00pages
272issue
1issn
1471-2407pii
10.1186/s12885-018-4180-5journal_volume
18pub_type
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