What is reticulation on HRCT?
Reticulation results from thickening of the interlobular or intralobular septa and appears as several linear opacities that resemble a mesh or a net on HRCT scans. 7. The presence of reticulation is indicative of interstitial lung disease.
What does reticular pattern mean?
The reticular interstitial pattern refers to a complex network of curvilinear opacities that usually involved the lung diffusely. They can be subdivided by their size (fine, medium or coarse).
What are HRCT patterns?
Several different high resolution computed tomography (HRCT) patterns related to pulmonary drug toxicity have been reported in literature, and the most frequent ILDs patterns reported include Nonspecific Interstitial Pneumonia (NSIP), Usual Interstitial Pneumonia (UIP), Hypersensitivity Pneumonitis (HP), Organizing …
What is peripheral reticulation?
Assoc Prof Craig Hacking ◉ ◈ and Dr Yuranga Weerakkody ◉ et al. Subpleural reticulation is a type of reticular interstitial pattern where the changes are typically in a peripheral subpleural distribution (i.e. adjacent to costal pleural surfaces, located ≤1 cm from the pleura according to some publications 4).
Is pulmonary fibrosis interstitial lung disease?
Interstitial lung disease refers to a group of about 100 chronic lung disorders characterized by inflammation and scarring that make it hard for the lungs to get enough oxygen. The scarring is called pulmonary fibrosis. The symptoms and course of these diseases may vary from person to person.
What causes reticular shadowing?
Symmetric reticular opacities are typically seen on chest radiographs of patients presenting with ECD. Kerley B lines on the chest radiograph are due to interlobular septal thickening as a result of interstitial lung infiltrate along the lymphatics or lymphatic engorgement from obstruction of the lymph drainage routes.
What is a reticular shadow?
Reticular Radiographic Shadows* The term ‘diffuse’ will be taken to mean scattered more or less uniformly over both lung fields. ‘Nodular’ means giving the impression of being caused by small nodules; that is, consisting of many small, rounded opacities. ‘Reticular’ means pro- ducing an appearance resembling a net.
What are the stages of interstitial lung disease?
Mild- meaning you have 5+ years with appropriate treatment. Moderate- meaning you have 3-5+ years with appropriate treatment. Severe- meaning you have 3+ years with appropriate treatment. Advanced- meaning you have < 3 years with appropriate treatment.
What is the HRCT reticular pattern in CT?
HRCT Reticular pattern. 2. INTRODUCTIONINTRODUCTION • HRCT — Use of thin section CT images (0.625 to 2 mm slice thickness) often with a high-spatial- frequency reconstruction algorithm to detect and characterize disease affecting the pulmonary parenchyma and airways.
Which is an example of a coarse reticular pattern?
• A coarse reticular pattern: this occurs with severe fibrosis and is characterized by interlacing irregular linear opacities an end-stage fibrotic (honeycomb) lung is characterized by cystic airspaces surrounded by irregular walls
What does high resolution computed tomography ( HRCT ) show?
Traction bronchiectasis/bronchiolectasis: extensive fibrosis can distort the lung morphology resulting in irregular segmental or subsegmental airway dilatation Reticular pattern: HRCT showing a coarse reticular pattern with extensive subpleural and basal honeycombing (arrows) in a patient with usual interstitial pneumonia.
What does reticular interstitial pattern mean on a CT scan?
Reticular interstitial pattern is one of the patterns of linear opacification in the lung. It can either mean a plain film or HRCT/CT feature. Reticulation can be subdivided by the size of the intervening pulmonary lucency into fine, medium and course.
