IMAGING OF THE WEEK DR. PRIYA KUBENDIRAN M1 UNIT PROF. DR. RAMASAMY
 
 
<ul><li>CXR PA view </li></ul><ul><li>Adequate exposure </li></ul><ul><li>Soft tissue & bony shadow normal </li></ul><ul><...
<ul><li>IMPRESSION </li></ul><ul><li>A thick walled cavity right middle lobe with ectatic changes with associated collapse...
 
 
CAVITY <ul><li>A gas containing space within the lung surrounded by a complete wall ≥ 1 mm in thickness </li></ul><ul><li>...
ETIOLOGY <ul><li>Infectious  :  bacterial </li></ul><ul><li>  fungal </li></ul><ul><li>parasites </li></ul><ul><li>Immunol...
<ul><li>Acute abscesses </li></ul><ul><li>Neoplasms </li></ul><ul><li>Metastases </li></ul><ul><li>Wegener’s granulomatosi...
<ul><li>Acute lung abscess </li></ul><ul><li>Primary malignancy </li></ul><ul><li>Post traumatic lung cyst </li></ul><ul><...
<ul><li>Klebsiella </li></ul><ul><li>S.pneumoniae </li></ul><ul><li>TB </li></ul><ul><li>Fungal </li></ul><ul><li>Carcinom...
PSEUDOCAVITATION /  BUBBLE LUCENCIES <ul><li>In HRCT, round/oval areas of low attenuation ≤ 5 mm in diameter are visible w...
Bubble  lucency Pseudocavity
Water  lily  sign Hydatid  cyst
Fungal ball
Wegener’s granulomatosis
SCC
 
 
 
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CXR - Cavity in Lung

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CXR - Cavity in Lung

  1. 1. IMAGING OF THE WEEK DR. PRIYA KUBENDIRAN M1 UNIT PROF. DR. RAMASAMY
  2. 4. <ul><li>CXR PA view </li></ul><ul><li>Adequate exposure </li></ul><ul><li>Soft tissue & bony shadow normal </li></ul><ul><li>Trachea in midline </li></ul><ul><li>Heart shadow normal </li></ul><ul><li>Lung parenchyma - a wedge shaped opacity seen in superior part of Rt lower zone with a thick walled irregular cavity </li></ul><ul><li>Lateral view – wedge shaped opacity corresponding to right middle lobe with a cavity with ectatic changes with associated collapse </li></ul>
  3. 5. <ul><li>IMPRESSION </li></ul><ul><li>A thick walled cavity right middle lobe with ectatic changes with associated collapse </li></ul><ul><li>? PT sequelae </li></ul><ul><li>? malignancy </li></ul>
  4. 8. CAVITY <ul><li>A gas containing space within the lung surrounded by a complete wall ≥ 1 mm in thickness </li></ul><ul><li>Occurs when an area of necrosis communicates with a patent airway </li></ul><ul><li>Features : 1) location </li></ul><ul><li>2) wall thickness </li></ul><ul><li> 3) outline </li></ul><ul><li> 4) fluid level </li></ul><ul><li> 5) contents </li></ul><ul><li> 6)surrounding lung </li></ul><ul><li> 7) multiplicity </li></ul>
  5. 9. ETIOLOGY <ul><li>Infectious : bacterial </li></ul><ul><li> fungal </li></ul><ul><li>parasites </li></ul><ul><li>Immunologic : Wegener’s granulomatosis </li></ul><ul><li>sarcoidosis </li></ul><ul><li>Neoplastic : primary neoplasms </li></ul><ul><li> haematogenous metastases </li></ul><ul><li>Thromboembolic : septic thromboembolism </li></ul><ul><li>Airways disease : bullae </li></ul><ul><li>cystic bronchiectasis </li></ul><ul><li>Traumatic : traumatic lung cyst </li></ul><ul><li>Developmental : sequestrated segment </li></ul><ul><li>bronchogenic cyst </li></ul>
  6. 10. <ul><li>Acute abscesses </li></ul><ul><li>Neoplasms </li></ul><ul><li>Metastases </li></ul><ul><li>Wegener’s granulomatosis </li></ul><ul><li>Rheumatoid nodules </li></ul><ul><li>Bullae </li></ul><ul><li>Pneumatocoeles </li></ul><ul><li>Cystic bronchiectasis </li></ul><ul><li>Chronic inactive TB </li></ul><ul><li>Hydatid cysts </li></ul><ul><li>Traumatic lung cysts </li></ul>
  7. 11. <ul><li>Acute lung abscess </li></ul><ul><li>Primary malignancy </li></ul><ul><li>Post traumatic lung cyst </li></ul><ul><li>Metastases </li></ul><ul><li>Wegener’s granulomatosis </li></ul><ul><li>Septic emboli </li></ul>
  8. 12. <ul><li>Klebsiella </li></ul><ul><li>S.pneumoniae </li></ul><ul><li>TB </li></ul><ul><li>Fungal </li></ul><ul><li>Carcinoma </li></ul><ul><li>Bullae </li></ul><ul><li>Sarcoidosis </li></ul><ul><li>Ps.aeruginosa </li></ul><ul><li>TB </li></ul><ul><li>Hydatid cyst </li></ul><ul><li>Septic thromboembolism </li></ul><ul><li>Bronchiectasis </li></ul><ul><li>Staph.aureus </li></ul><ul><li>Wegener’s </li></ul><ul><li>Metastases </li></ul>
  9. 13. PSEUDOCAVITATION / BUBBLE LUCENCIES <ul><li>In HRCT, round/oval areas of low attenuation ≤ 5 mm in diameter are visible within lung nodules </li></ul><ul><li>Seen in bronchoalveolar ca (60 %) </li></ul><ul><li>acinar cell carcinoma (30 %) </li></ul><ul><li>Represent 1) patent bronchi </li></ul><ul><li> 2) air containing cystic spaces </li></ul><ul><li>If ≥ 5 mm : 1) paracicatricial emphysema </li></ul><ul><li> 2) localised bronchiectasis </li></ul><ul><li> 3) tumor developing in an area of fibrosis & </li></ul><ul><li>honeycombing </li></ul>
  10. 14. Bubble lucency Pseudocavity
  11. 15. Water lily sign Hydatid cyst
  12. 16. Fungal ball
  13. 17. Wegener’s granulomatosis
  14. 18. SCC
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