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Related Experiment Videos

Methods of classifying and ascertaining children's tumours

I Leck, J M Birch, H B Marsden

    British Journal of Cancer
    |July 1, 1976
    PubMed
    Summary

    Accurate classification of childhood neoplasms is crucial for epidemiological studies. The Morphology Section of the Manual of Tumor Nomenclature and Coding (MOTNAC) is recommended over the International Classification of Diseases (ICD) for detailed childhood cancer research.

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    Area of Science:

    • Pediatric Oncology
    • Epidemiology
    • Cancer Classification

    Background:

    • Childhood neoplasms require accurate classification for epidemiological studies.
    • Existing classification systems may have limitations in differentiating common childhood tumors.
    • Data ascertainment methods need evaluation for completeness and accuracy.

    Purpose of the Study:

    • To evaluate methods for ascertaining and classifying childhood neoplasms for epidemiological research.
    • To compare the effectiveness of the International Classification of Diseases (ICD) and the Morphology Section of the Manual of Tumor Nomenclature and Coding (MOTNAC).
    • To assess the completeness of data sources for childhood cancer registration.

    Main Methods:

    • Utilized data from the University of Manchester Children's Tumour Registry (CTR) (1954-1973).

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  • Tested two classification systems: ICD and MOTNAC.
  • Compared ascertainment completeness using Hospital Activity Analysis (HAA), cancer registration, and death records.

    • Main Results:

    • MOTNAC demonstrated fewer problems and is recommended for epidemiological reports on childhood tumors.
    • The ICD system showed less discrimination between common childhood neoplasms but is useful for international comparisons.
    • Combining HAA and cancer registration records achieved over 98% ascertainment for serious childhood neoplasms.
    • Significant diagnostic discrepancies were found between routine records (HAA, cancer registrations) and final CTR diagnoses.

    Conclusions:

    • The revised Morphology Section of MOTNAC, within the proposed International Classification of Diseases for Oncology, is recommended for childhood cancer epidemiology.
    • Routine diagnostic records in epidemiological studies require central expert verification against all available clinical and pathological data.
    • While ICD is necessary for international comparisons, MOTNAC offers superior detail for childhood cancer classification.