Iodine 131-labeled metaiodobenzylguanidine scintigraphy and biochemical analyses in suspected pheochromocytoma

Journal Article · Mon Jul 01 00:00:00 EDT 1991 · Archives of Internal Medicine; (United States)

DOI:https://doi.org/10.1001/archinte.151.7.1397· OSTI ID:5462267

Hanson, M W; Feldman, J M; Beam, C A; Leight, G S; Coleman, R E ^[1]

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1. Department of Radiology, Duke University Medical Center, Durham, NC (USA)

Detection of abnormal catecholamine levels and localization of tumor mass are important factors in the diagnosis and treatment of pheochromocytoma. Iodine 131-labeled metaiodobenzylguanidine scintigraphy was performed in 64 patients with suspected pheochromocytoma if their urinary catecholamine levels were borderline or elevated, or if the clinical suspicion for pheochromocytoma was high in spite of normal urinary catecholamine determinations. The 131I-metaiodobenzylguanidine scans were evaluated for abnormal localization of tracer. Twenty-four-hour urine collections were analyzed for vanillylmandelic acid, homovanillic acid, dopamine, epinephrine, and norepinephrine. Thirty of the 64 patients had pheochromocytomas. The 131I-metaiodobenzylguanidine scan had a sensitivity and a specificity of 88%. The 24-hour urine vanillylmandelic acid and norepinephrine measurements had the best sensitivity (97%), while the vanillylmandelic acid and homovanillic acid measurements had the best specificity (91%). In patients in whom the vanillylmandelic acid measurement and the 131I-metaiodobenzylguanidine scan were normal, no pheochromocytomas were found. In patients in whom the vanillylmandelic acid measurement and 131I-metaiodobenzylguanidine scan were abnormal, a pheochromocytoma was always present. The 131I-metaiodobenzylguanidine scan often documents the presence or absence of a pheochromocytoma and provides localization of the tumor in the preoperative evaluation of these patients.

• OSTI ID: 5462267
• Journal Information: Archives of Internal Medicine; (United States), Vol. 151:7; ISSN 0003-9926
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
ADRENAL GLANDS
NEOPLASMS
CATECHOLAMINES
BIOSYNTHESIS
DIAGNOSIS
DOPAMINE
IODINE 131
PATIENTS
SCINTISCANNING
SENSITIVITY ANALYSIS
SPECIFICITY
URINE
AMINES
AROMATICS
AUTONOMIC NERVOUS SYSTEM AGENTS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
BIOLOGICAL WASTES
BODY
BODY FLUIDS
CARDIOTONICS
CARDIOVASCULAR AGENTS
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
DISEASES
DRUGS
ENDOCRINE GLANDS
GLANDS
HYDROXY COMPOUNDS
INTERMEDIATE MASS NUCLEI
IODINE ISOTOPES
ISOTOPES
MATERIALS
NEUROREGULATORS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANS
PHENOLS
POLYPHENOLS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SYMPATHOMIMETICS
SYNTHESIS
WASTES
550601* - Medicine- Unsealed Radionuclides in Diagnostics