Presentation
Known metastatic melanoma
Patient Data
Age: 55 years
Gender: Male
Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
From the case:
Peritumoral hemorrhage in metastatic melanoma - CT halo sign
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/19999/annotated_viewer_json?lang=us"}
A subpleural pulmonary nodule is noted at the posterior segment of right lower lobe surrounded with a ground-glass halo.
Case Discussion
The CT halo sign depicts peri-lesion ground-glass attenuation. A myriad of causes but specific to this case, the ground-glass attenuation is likely to reflect peritumor alveolar hemorrhage. Certain hypervascular lung metastases can manifest with the CT halo sign due to the fragility of neovascular tissue 1.
Unable to process the form. Check for errors and try again.