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Understanding Diffuse Lung Diseases: Radiological Insights and Differential Diagnoses

Diffuse diseases of the lung typically show significant radiological findings in the mid and lower zones due to increased lung volume in these areas. Common conditions include sarcoidosis, silicosis, and pulmonary fibrosis, often associated with volume loss. Factors like COPD, a variety of interstitial lung diseases, and conditions such as neuromuscular disorders can complicate these presentations. Proper assessment of lung shadowing is critical for differentiating between diverse causes, including infections, tumors, and vascular anomalies.

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Understanding Diffuse Lung Diseases: Radiological Insights and Differential Diagnoses

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Presentation Transcript

  1. BASIC CHEST RADIOLOGY 3

  2. Diffuse disease of the lung is most marked in the mid and lower zones, as this is where the x- rays are going through most lung volume. • Some diseases have an upper lobe preponderance.

  3. TB RADIATION-CONFINED TO SIDE OD RADIATION FIELD ALVEOLITIS-EXTRINSIC ALLERGIC MORE MID ZONE ANKYLOSING SPONDYLITIS SARCOIDOSIS SILICOSIS-TOGETHER WITH PMF HISTIOCYTOSIS

  4. WIDESPREAD INTERSTITIAL SHADOWING IS USUALLY FIBROSIS and associated with volume loss. Main reason for normal/large volume with fibrosis is usually COPD A few rare causes are HISTIOCYTOSIS,NEUROFIBROMATOSIS, AND LLYMPHANGIOMYOMATOSIS OTHER CAUSES COLLAGEN VASCULAR D ALVEOLITIS UIP RADIATION DRUGS SICKLE, SCLERODERMA

  5. COLLAPSE-VOLUME LOSS EFFUSION-OFTEN WITH PASSIVE COLLAPSE AND NO SHIFT PNEUMONIA PNEUMONECTOMY

  6. REVERSE PULMONARY OEDEMA PULMONARY EOSINOPHILIA SARCOID PULMONARY CONTUSION

  7. MULTIPLE CALCIFIED PLEURAL PLAQUES ASBESTOS PLAQUES-NOT ASBESTOSIS

  8. UNILATERAL PLEURAL CALCIFICATION TB HAEMATOMA

  9. ANTERIOR MEDIASTINAL MASS ALWAYS INCLUDE TUMOUR AND ANEURYSM IN ALL DIFFERENTIAL OF MEDIASTINAL MASS.THEN THINK ANANTOMICALLY TUMOUR TERRATODERMOID-ALSO SEMINOMA THYMIC TUMOUR THYROID

  10. ANEURYSM OF AORTIC ARCH

  11. MIDDLE MEDIASTINUM LYMPH NODES CYSTS-ENTERIC/BRONCHOGENIC

  12. POSTERIOR MEDIASTINUM NEUROGENIC ABSCESS EXTRAMEDULLARY HAEMOPOIESIS METASTASE

  13. RT CARDIOPHRENIC MASS FAT PAD PERICARDIAL CYST MORGAGNI HERNIA

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