J Radiol
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A fluoroscopy-guided lumbar spine injection procedure may be complicated by immediate paralysis. Twelve cases (five recent and seven published) that occurred between 2002 and 2008 were reviewed (history of lumbar surgery, route of injection, image-guidance, injection of contrast, type of steroid, level of paraplegia, MR imaging features). ⋯ A transforaminal approach was used in all patients without history of lumbar surgery while transforaminal, interlaminar and juxta-zygapophyseal approaches were used in patients with prior lumbar surgery. The high number of cases in France could be explained by the exclusive use of prednisolone acetate which has a higher rate of macro-aggregate formation that could lead to embolization in medullary arteries.
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Gas containing lesions of the lung can be differentiated into cystic and cavitary lesions based on their imaging characteristics, which is helpful for differential diagnosis. The imaging features include number, size, thickness and smoothness of the walls, content, lesion distribution and occasional associated lesions. Some imaging features have characteristic diagnostic implications: mural nodule and meniscus sign. ⋯ Emphysema, honeycombing and cystic bronchiectases should also be considered. Cavitary lesion have thicker walls. The most frequent etiologies include abscess, cavitary tumors, mycobacterial infections and fungal infections.
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Letter Case Reports
[Solid variant of aneurysmal bone cyst presenting with cord compression].
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Review Comparative Study
[CT features of right heart involvement in thoracic diseases].
Numerous respiratory disorders may be responsible for right heart dysfunction, frequently suboptimally assessed in routine clinical practice. Multidetector-row CT systems with fast scanning capabilities can acquire images of the thorax with reduced cardiac motion artifacts, enabling improved evaluation of the heart. Moreover, the introduction of fast rotation speed and dedicated cardiac reconstruction algorithms exploiting the multislice acquisition scheme of the data has opened the possibility of integrating right cardiac functional information into a diagnostic CT scan of the chest, without or with ECG gating.