二氧化钍：仍存在。
Thorium dioxide: still around.
作者信息
Velasquez G, Ward C F, Bohrer S P
出版信息
South Med J. 1985 Jun;78(6):743-5. doi: 10.1097/00007611-198506000-00033.
Abstract
Patients who have received thorium dioxide (Thorotrast) are at risk for hepatic and other malignancies. Because of the need to identify and carefully follow up these patients, we have presented three cases with the characteristic radiologic findings on plain films so that physicians unfamiliar with this appearance will now be aware of it.
摘要
接受过二氧化钍（钍造影剂）的患者有患肝脏及其他恶性肿瘤的风险。由于需要识别并仔细随访这些患者，我们展示了三例在平片上具有特征性放射学表现的病例，以便不熟悉这种表现的医生现在能够有所了解。
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