1. False-positive 123I-metaiodobenzylguanidine (MIBG) scan in a patient with angiomyolipoma; positive MIBG scan does not necessarily indicate the presence of pheochromocytoma
- Author
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Nobuyuki Takasu, Yoshihide Ogawa, Tsuyoshi Kouki, Mina Hayashi, Takako Iha, Yuzuru Ohshiro, and Masaki Takara
- Subjects
Adult ,endocrine system ,medicine.medical_specialty ,Angiomyolipoma ,Adrenal Gland Neoplasm ,Adrenal Gland Neoplasms ,Pheochromocytoma ,3-Iodobenzylguanidine ,Magnetic resonance angiography ,Diagnosis, Differential ,hemic and lymphatic diseases ,Internal Medicine ,Medicine ,Retroperitoneal space ,Humans ,False Positive Reactions ,neoplasms ,Tomography, Emission-Computed, Single-Photon ,medicine.diagnostic_test ,business.industry ,General Medicine ,medicine.disease ,medicine.anatomical_structure ,Catecholamine ,Female ,Radiology ,Differential diagnosis ,Radiopharmaceuticals ,business ,Magnetic Resonance Angiography ,medicine.drug - Abstract
123I-Metaiodobenzylguanidine (123I-MIBG)-accumulation in angiomyolipoma (AML) is demonstrated. A 24-year-old Japanese woman presented with tumors in the right retroperitoneal space. The tumors, which accumulated 123I-MIBG, had been thought to be adrenal pheochromocytoma before surgery. They were removed, and were found to be AML. 123I-MIBG was accumulated in AML. 123I-MIBG-accumulation in AML led to a false-positive diagnosis of adrenal pheochromocytoma. Catecholamine levels had been normal. No chromaffin cells were found in the histological examination of the tumors. MIBG accumulation does not necessarily indicate the presence of pheochromocytoma.
- Published
- 2007