What is a bronchial pattern

?What is a bronchial pattern



by Allison Zwingenberger on November 20, 2007

A bronchial pattern on radiographs indicates a condition that involves the airways. It can be a subtle pattern to recognize, so lets look at some of the features.
Normal bronchi


The airways are made out of cartilage which is radiolucent, but they have some surrounding soft tissue structures that can make them visible. The bronchi are normally visible near the heart base where the diameter is still quite large. You might see parallel thin walls with vessels on either side, or just see the airways flanked by the pulmonary arteries and veins. Take a look at this normal thorax for an example. There are some mildly mineralized bronchi which we’ll discuss next.
Mineralized bronchi


With age, many dogs develop mineralization of the airways and trachea. It is not a normal aging change in cats. Mineralized bronchi are recognizable because of their mineral opacity and very thin, sharp borders. The bronchi are visible farther out in the periphery than in a dog with no mineralization. But any increase in opacity is uniform and very opaque (image 1).
Bronchial pattern


In a true bronchial pattern due to infectious or inflammatory disease, the bronchial walls are visible further out in the periphery than usual. Look for them over soft tissue structures such as the heart or diaphragm. They have irregular or indistinct borders, and are visible separately from the vessels that run parallel to them (image 2). The parallel lines you see are called tram tracks, and a bronchus visible end-on with thickened walls is called a donut. It can also be described as a cygnet ring, as it tends to be of non-uniform thickness (image 3).
The bronchial pattern is most common in cats with chronic lower airway disease. Their airways are very small, so look in the periphery for donuts and especially on the v/d or d/v projection where they show up better. A magnifying glass can come in handy as well. Chronic bronchial disease can result in bronchiectasis, which is an irreversible dilation of the bronchi. They don’t taper toward the periphery, and can be saccular in appearance.
Key points

• Normal bronchi are flanked by vessels but the walls are not visible.
  
• Mineralized bronchi have mineral opacity, sharp, uniform walls.
  
• Abnormal bronchi have indistinct, soft tissue opacity, non-uniform walls.
  
• Abnormal bronchi are visible in the periphery of the lung.
  

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hi Waleed ... how are you

the summery in the end of the subject as a key points very usefull ....


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السلام عليكم
والله الحمد لله ماجده
الامور ماشيه انتي شنو اخبارك
والله ماجده احاول انقل المواضيع المهمه مثل متعرفين التشخيص اهم مرحله من مراحل العلاج الصحيح
اليوم اصبح الاعتماد على السونار بشكل كبير رغم انه يحتاج الى طبيب ممارس على اليات التشخيص بالسونار
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مساء الخير وليد

الحمد لله انت بخير ... اخبارنا مثل ما هي لا جديد العمل الروتيني نفسه

بالتاكيد ان استخدام التقنيات الحديثة في التشخيص تقلل من فرص الخطأ وتسرع في علاج الحالة بالصورة الامثل ... حسب معرفتي بعمل بعض الزملاء في العيادات الخاصة فانهم يستخدمون السونار في تشخيص الامراض بالنسبة للكلاب والقطط في عياداتهم وبالتاكيد احدث استخدام هذه التقنية طفرة نوعية في سرعة التشخيص والعلاج .

تحياتي لك ... وشكرا لجهودك المتميزة في المساهمة بمواضيع ذات نهج علمي


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الرجاء المرور على مساهمات التصوير الشعاعي والسونار قبل الاجابه على تشخيص الصور الشعاعيه المزمع نشرها في المنتدى تباعا

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