Ploidy as a prognostic indicator in oesophageal squamous carcinoma and its relationship to various histological criteria

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Abstract
One hundred surgically resected squamous cell carcinomas of the oesophagus were studied retrospectively to assess the significance of DNA aneuploidy as determined by flow cytometry using paraffin‐embedded tissue. DNA aneuploidy was not an independent prognostic indicator but was found to be associated with tumour necrosis and host/tumour interface fibrosis. When tumours confined to submucosa or muscle wall were assessed, diploid tumours had a poorer survival rate than DNA aneuploid tumours. Other histological variables studied were tumour differentiation, depth of infiltration, glandular and small cell differentiation, lymphatic and vascular spread and host inflammatory response. These failed to show any significant association with ploidy.