Key result
A 58-year-old man with pulmonary artery intimal sarcoma was initially misdiagnosed with pulmonary thromboembolism due to poor 18F-fluorodeoxyglucose uptake on positron emission tomography.
Case Report (n=1)
No
Pulmonary artery intimal sarcoma can present with poor FDG uptake on PET imaging, mimicking chronic pulmonary thromboembolism and potentially leading to misdiagnosis and inappropriate therapy.
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Low FDG uptake on PET does not exclude pulmonary artery intimal sarcoma; this case leaves open questions on PET diagnostic utility.
Intimal sarcoma of the pulmonary artery is a rare malignant tumor that may be misdiagnosed as chronic pulmonary thromboembolism, even if various imaging techniques are used. We report a case of a 58-year-old man with pulmonary artery intimal sarcoma.18F-fleuorodeoxyglucose (FDG) uptake was poor in the mass of the pulmonary artery, and no other hypermetabolic lesions were noted elsewhere. Our presumptive diagnosis was a massive mural thrombus and a concomitant chronic thromboembolism. Intravenous heparin and recombinant human tissue-type plasminogen activator was subsequently administered. However, the patient needed an emergency operation for sudden aggravation of the vital signs, and the tissue diagnosis was intimal sarcoma with poor clinical outcomes.
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Lee et al. (2013) conducted a case report in Pulmonary artery intimal sarcoma (n=1). Surgical resection was evaluated. A 58-year-old man with pulmonary artery intimal sarcoma was initially misdiagnosed with pulmonary thromboembolism due to poor 18F-fluorodeoxyglucose uptake on positron emission tomography.
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