![](/uploads/1/2/6/9/126915519/766743716.jpg)
Multiple diffuse patchy opacities are seen in lung fibrosis. Tuberculosis classically present with upper lobe cavities and infiltrates. Sometimes it may present as solitary nodule or diffuse alveolar opacities. Patchy opacity with cavitary lesion in apex of lung is usually due to tubercular infection.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following . If you think you may have a medical emergency, call your physician or 911 immediately.
CT scan of a reverse halo sign (black arrow) due to because of chronic (white arrow).A reversed halo sign is a central ground-glass opacity surrounded by denser consolidation. Criteria include that the consolidation should form more than three-fourths of a circle and be at least 2 mm thick. It is suggestive of, but is only seen in about 20% of individuals with this condition. It can also be present in where the halo consists of hemorrhage, as well as in infectious diseases such as, and, as well as in,. References. Jannette Collins, MD; Eric J. Stern, MD (1998).
Applied Radiology. Archived from (PDF) on 2012-05-18. Retrieved 2012-02-01. ^ Radswiki; et al. Retrieved 2018-01-02. Brett M. Richard Webb (2012).
![Patchy Opacity And Infiltrates Patchy Opacity And Infiltrates](/uploads/1/2/6/9/126915519/213932906.jpg)
Fundamentals of High-Resolution Lung CT: Common Findings, Common Patterns, Common Diseases, and Differential Diagnosis. Lippincott Williams & Wilkins. Wu, George; Schmit, Berndt; Arteaga, Veronica; Palacio, Diana (2017). 'Medical image of the week: pulmonary infarction- the 'reverse halo sign '. Southwest Journal of Pulmonary and Critical Care. 15 (4): 162–163.
in: D Karthikeyan (2013). High Resolution Computed Tomography of the Lungs: A Practical Guide. JP Medical Ltd.External links.
![](/uploads/1/2/6/9/126915519/766743716.jpg)