SPECT anti-CEA monoclonal antibody detection of occult colorectal carcinoma metastases. 1991

L C Swayne, and D M Goldenberg, and W L Diehl, and R D Macaulay, and L A Derby, and J Z Trivino
Department of Diagnostic Radiology, Morristown Memorial Hospital, New Jersey 07960.

Radioimmunodetection (RAID) using Tc-99m labeled Fab' fragments of the anti-CEA monoclonal antibody IMMU-4 was performed in a 68-year-old man for preoperative evaluation of colonic metastases. Planar images at 3 and 18 hours showed uptake within known metastases in the left lobe of the liver that had been observed with CT and at surgery during the preceding month. SPECT images at 3 hours demonstrated two additional unsuspected lesions. All sites were surgically confirmed the following day using intraoperative sonographic guidance, with the smallest occult lesion measuring only 6 x 9 mm. This case illustrates the limitations of CT and surgery, the potential of RAID for the detection of occult metastases, the increased sensitivity of SPECT over planar images for detecting lesions less than 1 cm in diameter, and the value of intraoperative guidance for small nonpalpable lesions.

UI MeSH Term Description Entries
D008113 Liver Neoplasms Tumors or cancer of the LIVER. Cancer of Liver,Hepatic Cancer,Liver Cancer,Cancer of the Liver,Cancer, Hepatocellular,Hepatic Neoplasms,Hepatocellular Cancer,Neoplasms, Hepatic,Neoplasms, Liver,Cancer, Hepatic,Cancer, Liver,Cancers, Hepatic,Cancers, Hepatocellular,Cancers, Liver,Hepatic Cancers,Hepatic Neoplasm,Hepatocellular Cancers,Liver Cancers,Liver Neoplasm,Neoplasm, Hepatic,Neoplasm, Liver
D008297 Male Males
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D013667 Technetium The first artificially produced element and a radioactive fission product of URANIUM. Technetium has the atomic symbol Tc, and atomic number 43. All technetium isotopes are radioactive. Technetium 99m (m Technetium 99m,99m, Technetium
D015179 Colorectal Neoplasms Tumors or cancer of the COLON or the RECTUM or both. Risk factors for colorectal cancer include chronic ULCERATIVE COLITIS; FAMILIAL POLYPOSIS COLI; exposure to ASBESTOS; and irradiation of the CERVIX UTERI. Colorectal Cancer,Colorectal Carcinoma,Colorectal Tumors,Neoplasms, Colorectal,Cancer, Colorectal,Cancers, Colorectal,Carcinoma, Colorectal,Carcinomas, Colorectal,Colorectal Cancers,Colorectal Carcinomas,Colorectal Neoplasm,Colorectal Tumor,Neoplasm, Colorectal,Tumor, Colorectal,Tumors, Colorectal
D015899 Tomography, Emission-Computed, Single-Photon A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image. CAT Scan, Single-Photon Emission,CT Scan, Single-Photon Emission,Radionuclide Tomography, Single-Photon Emission-Computed,SPECT,Single-Photon Emission-Computed Tomography,Tomography, Single-Photon, Emission-Computed,Single-Photon Emission CT Scan,Single-Photon Emission Computer-Assisted Tomography,Single-Photon Emission Computerized Tomography,CAT Scan, Single Photon Emission,CT Scan, Single Photon Emission,Emission-Computed Tomography, Single-Photon,Radionuclide Tomography, Single Photon Emission Computed,Single Photon Emission CT Scan,Single Photon Emission Computed Tomography,Single Photon Emission Computer Assisted Tomography,Single Photon Emission Computerized Tomography,Tomography, Single-Photon Emission-Computed
D016719 Radioimmunodetection Use of radiolabeled antibodies for diagnostic imaging of neoplasms. Antitumor antibodies are labeled with diverse radionuclides including iodine-131, iodine-123, indium-111, or technetium-99m and injected into the patient. Images are obtained by a scintillation camera. Immunoscintigraphy, Radiolabeled,Radioimmunoimaging,Radioimmunoscintigraphy,Immunoscintigraphy, Radiolabelled,Radiolabeled Immunoscintigraphy,Radiolabelled Immunoscintigraphy,Immunoscintigraphies, Radiolabeled,Immunoscintigraphies, Radiolabelled,Radioimmunodetections,Radioimmunoimagings,Radioimmunoscintigraphies,Radiolabeled Immunoscintigraphies,Radiolabelled Immunoscintigraphies

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