Halo sign: Difference between revisions
CSV import Tags: mobile edit mobile web edit |
CSV import |
||
| Line 28: | Line 28: | ||
{{stub}} | {{stub}} | ||
<gallery> | |||
File:CT Halo sign around a right lower lobe pulmonary nodule.png|Halo sign | |||
</gallery> | |||
Revision as of 01:02, 20 February 2025
Halo sign is a medical term used in radiology to describe the appearance of a lesion surrounded by a rim of ground glass opacity on a computed tomography (CT) scan. This sign is often associated with certain diseases, such as invasive pulmonary aspergillosis, and can be a crucial diagnostic feature.
Definition
The Halo sign is defined as a focal area of ground glass opacity surrounding a nodule or mass on a CT scan. This appearance is due to hemorrhage or edema in the lung tissue surrounding the lesion.
Clinical Significance
The Halo sign is most commonly associated with Invasive Pulmonary Aspergillosis, a serious fungal infection that can occur in immunocompromised patients. However, it can also be seen in other conditions such as Cryptococcosis, Tuberculosis, and certain types of lung cancer.
Diagnosis
The diagnosis of conditions associated with the Halo sign is typically made based on a combination of clinical symptoms, laboratory tests, and imaging findings. The presence of the Halo sign on a CT scan can provide valuable information to guide further diagnostic testing and treatment.
Treatment
The treatment for conditions associated with the Halo sign depends on the underlying cause. For example, Invasive Pulmonary Aspergillosis is typically treated with antifungal medications, while lung cancer may require surgery, radiation therapy, or chemotherapy.
