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Correlation of serum lactate dehydrogenase and alkaline phosphatase in different histological grades of head and neck squamous cell carcinoma and premalignant lesions.
Context: Head neck cancer (HNCA) in North-East India accounts for 54.48% cancers at all sites, one of the highest in the country. Increased serum lactate dehydrogenase (LDH) activity is considered as a marker of cellular necrosis while serum alkaline phosphatase (ALP) is recognized as an important marker of induction of tumor cell differentiation. Considering the importance and need of biomarker in HNCA and there being no previous study on tumor markers from this highly prevalent region, we intended to examine the role of serum LDH and ALP in head and neck squamous cell carcinoma (HNSCC) and epithelial precursor lesions (EPLs) and also to find their correlation with the different histological grades of tumor.
Materials and Methods: This is a prospective observational study on patients with HNSCC and precancerous lesions attending Department of ENT of a Teaching Hospital. Serum LDH and ALP was measured in HNSCC, EPL and control groups and the results were statistically analyzed and compared using analysis of variance, Pearson correlation coefficient, and sensitivity-specificity analysis.
Results: Serum LDH was found to be a significant marker of HNSCC. Total serum LDH level was high in both premalignant and HNSCC cases. There was a significant correlation between serum LDH and grades of HNSCC showing highest levels of expression in moderately differentiated SCC. Elevated serum LDH was also seen in erythroleukoplakia, leukoplakia, and verrucous lesion, but serum ALP levels were not significant.
Conclusions: This is the first study from this highly prevalent region of HNCA showing that serum LDH could be regarded as a biomarker for malignant and premalignant conditions of the head and neck.
Materials and Methods: This is a prospective observational study on patients with HNSCC and precancerous lesions attending Department of ENT of a Teaching Hospital. Serum LDH and ALP was measured in HNSCC, EPL and control groups and the results were statistically analyzed and compared using analysis of variance, Pearson correlation coefficient, and sensitivity-specificity analysis.
Results: Serum LDH was found to be a significant marker of HNSCC. Total serum LDH level was high in both premalignant and HNSCC cases. There was a significant correlation between serum LDH and grades of HNSCC showing highest levels of expression in moderately differentiated SCC. Elevated serum LDH was also seen in erythroleukoplakia, leukoplakia, and verrucous lesion, but serum ALP levels were not significant.
Conclusions: This is the first study from this highly prevalent region of HNCA showing that serum LDH could be regarded as a biomarker for malignant and premalignant conditions of the head and neck.
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