Targeted versus non targeted lesion measurements – Radiation, RECIST

Discussion Board Forums Radiation Treatments & Options Targeted versus non targeted lesion measurements – Radiation, RECIST

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  • #88469
    gavin
    Moderator

    Thanks for that Marion.

    #11351
    marions
    Moderator

    Please note: lesion = tumor
    To measure localized changes:

    Targeted: Tumors that have been measured and then compared with follow-up scan

    Non-targeted: Tumors that were present and have been noted, but measurements have not been taken

    Complete Response (CR): Disappearance of all non-target lesions and normalization of tumor marker level

    Incomplete Response – Stable Disease (SD): Persistence of one or more non-target lesion(s) or/and maintenance of tumor marker level above the normal limits

    Progressive Disease (PD): Appearance of one or more new lesions and/or unequivocal progression of existing non-target lesions (1)

    Radiation technology is still developing and is not perfect. As noted, incomplete response and stable disease are combined. This may take in account the thickness of the CR plate measuring 1 cm and other notable insufficiency inherent to the current technology.

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