Research Article

Tomoscintigraphy for detecting gastrointestinal and medullary thyroid cancers: first clinical results using radiolabelled monoclonal antibodies against carcinoembryonic antigen.

Br Med J (Clin Res Ed) 1982; 285 doi: https://doi.org/10.1136/bmj.285.6353.1447 (Published 20 November 1982) Cite this as: Br Med J (Clin Res Ed) 1982;285:1447
  1. C Berche,
  2. J P Mach,
  3. J D Lumbroso,
  4. C Langlais,
  5. F Aubry,
  6. F Buchegger,
  7. S Carrel,
  8. P Rougier,
  9. C Parmentier,
  10. M Tubiana

    Abstract

    Transaxial tomoscintigraphy (or single-photon emission computerised tomography) was used to detect secondary deposits of carcinoma in 17 patients who had been injected with iodine-131-labelled monoclonal antibodies against carcinoembryonic antigen. Of 17 tumor sites studied by tomoscintigraphy 16 were detected (sensitivity 94%); five sites had a volume smaller than 10 cm3. Tomoscintigraphy also detected three unknown tumour deposits later confirmed by surgery or radiology. In contrast, when 21 tumour sites in the same patients were studied by rectilinear scintigraphy, only nine tumour sites were detected (sensitivity 43%), of which eight had a volume larger than 50 cm3.