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Padlock Sign A rare CT finding in which a mass density is accompanied by adjacent ring enhancement, representing eccentric cavitation in a solid intracranial lesion; while characteristic of higher grade astrocytomas, abscesses, and metastases, it is also seen in craniopharyngioma, meningioma, prolactinoma—with cystic changes—and tuberculosis, and thus has little diagnostic specificity Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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