Key result
Malignant arterial emboli display typical angiographic features and likely originate from pulmonary vein metastases.
Why the study?
Malignant arterial emboli are rare and their angiographic features and origins are not well characterized.
Malignant arterial emboli can present with typical radiographic features on angiography and may originate from chest metastases involving a pulmonary vein.
Answers are grounded in this paper and cite their sources.
Raises awareness of malignant emboli in cancer patients; leaves open prospective validation of angiographic features and pulmonary vein sources.
Two patients with malignant arterial emboli, one from a renal cell carcinoma and the other from a squamous cell carcinoma of the trachea, are described. Both patients had typical radiographic features of emboli on angiography. The origin of such arterial emboli is most probably a chest metastasis involving a pulmonary vein.
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Stanley et al. (1978) studied this question. Malignant arterial emboli presented with typical radiographic features on angiography and most likely originated from chest metastases involving a pulmonary vein.
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