Bright dot sign (atypical liver hemangioma)
The bright dot sign refers to the presence of a bright dot within a lesion which remains hyperattenuating on arterial and portal venous phase CT, corresponding to early nodular enhancement seen on dynamic MRI of liver hemangioma.
This can be used as an indicator that the lesion in question is a hemangioma (and not a metastasis). Dynamic MRI should be confirmatory.
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- 2. Jang HJ, Kim TK, Lim HK et-al. Hepatic hemangioma: atypical appearances on CT, MR imaging, and sonography. AJR Am J Roentgenol. 2003;180 (1): 135-41. AJR Am J Roentgenol (citation) - Pubmed citation