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Histopathological assessment of lymph nodes in upper gastrointestinal cancer: does triple levelling detect significantly more metastases?
  1. Stephen McGrath (stephenmcgrath{at}doctors.org.uk)
  1. Manchester Royal Infirmary, United Kingdom
    1. Sarah Cross (scross{at}doctors.org.uk)
    1. Schering Health Care, United Kingdom
      1. Susan A Pritchard (susan.pritchard{at}smuht.nwest.nhs.uk)
      1. South Manchester University Hospitals, United Kingdom

        Abstract

        Aims: For cancers of the upper gastrointestinal tract it is standard to examine one section/level, from paraffin blocks containing lymph node tissue, for metastatic tumour. This study assessed if significantly more metastases were detected by assessing two additional levels.

        Methods: 101 archival upper gastrointestinal cancers were evaluated. All negative lymph nodes were examined at two additional levels separated by 100 µm and stained by haematoxylin and eosin. The slides were examined for the presence of metastases.

        Results: 1143 lymph nodes, that were originally clear of metastases, were examined at a further 2 levels (3 levels in total). 23 additional metastases were identified in 17 patients. Eleven of these patients were already stage N1 before levels. However, six patients were originally N0, so were upgraded to N1.

        Conclusions: Examining lymph nodes at three levels did detect more metastatic deposits than examination of one section/level. In six patients this changed the N stage from N0 to N1. This would have significant prognostic and management implications.

        • gastric cancer
        • gastrointestinal cancer
        • histopathology
        • lymph nodes
        • oesphageal cancer

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