Abstract
DNA analysis is currently being applied to many solid tumors to determine DNA content and synthesis phase fraction. We compared DNA content measured by flow cytometry with multiple histologic parameters in 155 squamous cell carcinomas of the upper aerodigestive tract. Abnormal DNA content (aneuploidy) was identified in 107 (69%) of the neoplasms. Abnormal DNA content or aneuploidy correlated with above-median synthesis phase fraction and increased frequency of mitotic figures. Other histologic features predicting aggressive tumor behavior also correlated with abnormal DNA content and included small cords or single cell pattern of tumor invasion, high nuclear grade, and decreased stromal or desmoplastic response to the invading squamous cell carcinoma.
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