期刊
DIAGNOSTICS
卷 12, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/diagnostics12040934
关键词
bone scintigraphy; extraosseous uptake; lung uptake; SPECT/CT
A 48-year-old woman with breast cancer underwent a bone scan and two hot spots were found in the left lung. CT slices showed no abnormalities and other possible causes were ruled out. Radiotracer microembolism seems to be the most likely hypothesis in this case.
A 48-year-old woman was referred for a bone scan as an assessment of bone metastasis from breast cancer. Surprisingly, two hot spots of lung uptake were present in the left lung without any abnormality on CT slices. No history of pulmonary disease was observed. An optimized CT scan with fine slices performed the same day was strictly normal (without any micronodule). A lung ventilation/perfusion scintigraphy showed no significant perfusion defect. A follow-up bone scan performed eight months later was normal and without any lung uptake. After exclusion of the main etiologies described in the literature, such as amylosis, sarcoidosis, abscess, or hypercalcemia, radiotracer microembolism seems to be the most likely hypothesis in this patient.
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