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CAVITY – a useful mnemonic for the causes of a cavitating lung mass.

C = cancer
CAVITY – a useful ... mnemonic for the causes ... of a cavitating lung ... mass. ... #Differential #Lung
Radiologists use many terms to describe areas of decreased density or lucencies within the lung, like
lucencies within the lung ... , like cyst, cavity ... since in many cases ... density in the lung ... visible wall #CXR
Mucoid impaction
Mucus plugs or mucoid impaction can mimick the appearance of lung nodules or a mass.
Sometimes
appearance of lung ... nodules or a mass ... bronchial obstruction caused ... #Clinical #Radiology ... #CXR #CTChest #
Nontuberculous mycobacteria
Nontuberculous mycobacteria, also known as atypical mycobacteria, are all the other mycobacteria which can cause
mycobacteria which can cause ... pus within the cavity ... #Clinical #Radiology ... #CXR #Lateral # ... Mycobacteria #NTM #Cavity
A 50 yo F with a history of poor dentition presents to the ED with fever
A CXR is done. ... Diagnosis: Cavitary ... consistent w/ lung ... abscess #Clinical ... #Radiology #CXR
Lungcancer
10% of lungcancers cavitate, most commonly squamous cell carcinoma.
Small cell lungcancer does not cavitate.
Bronchoalveolar carcinoma, or
large cavitating lung ... started as a small mass ... #Clinical #Radiology ... #CXR #LungCancer ... #Cancer #Cavity
Here are the most common examples of these four patterns on a chest x-ray (click image
opacities Nodule or mass ... Nodule - Multiple Masses ... Atelectasis #Diagnosis #Clinical ... #Radiology #CXR
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
• Most common cause ... Lung Abscess - Clinical ... Blood cultures • CXR ... early disease) • CXR ... #differential #causes
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
in the proper clinical ... densities iin the left lung ... #Clinical #Radiology ... #CXR #CTChest # ... #SepticEmboli #Cavity
The PA-film shows a silhouette sign of the left heart border.
Even without looking at the lateral
anteriorly in the left lung ... to a pneumonia caused ... #Clinical #Radiology ... #CXR #Pneumonia