Reticulonodular opacities
A reticulonodular interstitial pattern is an imaging descriptive term that can be used in thoracic radiographs or CT scans when are there is an overlap of reticular shadows with nodular shadows. This may be used to describe a regional pattern or a diffuse pattern throughout the lungs. It is a non specific imaging descriptor but can be seen in varied conditions such as
- silicosis
- pulmonary sarcoidosis
- berylliosis
- lymphangitis carcinomatosis
- hepatopulmonary syndrome - basal
- pneumocystis pneumonia - can sometimes give a fine reticulonodular pattern
- bronchocentric granulomatosis
- pulmonary Langerhans cell histiocystosis
- lymphocytic interstitial pneumonitis
- Erdheim-Chester disease
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