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  • 1
    ISSN: 1619-7089
    Keywords: Colorectal cancer ; Radioimmunoscintigraphy ; Technetium-99m labelled 1A3 monoclonal antibodv
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This study of radioimmunoscintigraphy (RIS) was primarily undertaken to determine how the imaging results related to surgical findings. Technetium-99m radiolabelled 1A3, a monoclonal antibody against a columnar cell surface antigen, was used. No adverse effects or thyroid uptake was observed in 127 studies. The 85 primary colorectal cancers were all image positive. In the assessment of recurrent tumour in the abdomen or pelvis, the accuracy was 33/35 (94%), including true-positive findings in some whose serum carcinoembryonic antigen was normal. There was a positive predictive value for abdominal or pelvic recurrence of 92% and a negative predictive value of 100%, at a prevalence of 66%. In those patients whose liver was able to be evaluated, the accuracy was 72/79 (91%). There was a positive predictive value for liver metastases of 88% and a negative predictive value of 93%, at a prevalence of 32%. The simple procedure for labelling antibody with 99mTc and its ready availability allow a completed report to be given within 24 h of the request.
    Type of Medium: Electronic Resource
    Signatur Availability
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