Scintigraphy and treatment of medullary carcinoma of the thyroid with iodine-131 metaiodobenzylguanidine
We report our experience using (/sup 131/I)metaiodobenzylguanidine (MIBG) to image nine patients with proven medullary carcinoma of the thyroid (MCT). Positive uptake was seen in four patients, equivocal uptake in one patient, and no uptake in four patients. Data are presented to demonstrate the pharmacokinetics of (/sup 131/I)MIBG in three of the patients studied. Two patients, with diarrhea and severe pain from known bone metastases and positive uptake on (/sup 131/I)MIBG diagnostic scanning, subsequently received therapeutic doses of (/sup 131/I)MIBG, with marked improvement in both pain and diarrhea, but no evidence of significant biochemical response. Iodine-131 MIBG uptake in patients with MCT is variable, and gives a higher false-negative rate than is found when using (/sup 131/I)MIBG to image other neuroectodermally derived tumors. The therapeutic potential of (/sup 131/I)MIBG in patients with MCT warrants further evaluation, in view of the symptomatic relief experienced following therapy doses in two patients with extensive disease.
- Research Organization:
- Guy's Hospital, London, England
- OSTI ID:
- 5724245
- Journal Information:
- J. Nucl. Med.; (United States), Vol. 28:12
- Country of Publication:
- United States
- Language:
- English
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RADIOTHERAPY
RADIOPHARMACEUTICALS
DIAGNOSTIC USES
THERAPEUTIC USES
THYROID
SCINTISCANNING
IODINE 131
METASTASES
PATIENTS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
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ENDOCRINE GLANDS
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INTERMEDIATE MASS NUCLEI
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LABELLED COMPOUNDS
MEDICINE
NEOPLASMS
NUCLEAR MEDICINE
NUCLEI
ODD-EVEN NUCLEI
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RADIOLOGY
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550601* - Medicine- Unsealed Radionuclides in Diagnostics
550604 - Medicine- Unsealed Radionuclides in Therapy- (1980-)