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

C = cancer
CAVITY – a useful ... of a cavitating lung ... left image) - cavitatory ... pulmonary abscess (TB ... #Differential #Lung
Tuberculin Skin Test Interpretation - Threshold for treatment
Induration cutoff >5mm:
 • Recent exposure to an individual
Tuberculin Skin ... individual with active TB ... • Abnormal CXR ... consistent with old TB ... carcinoma of head/neck/lung
Cavitary Lung Disease - Differential Diagnosis and Workup Algorithm
Acute / Subacute:
 • Acute Infections: Lung abscess,
Cavitary Lung Disease ... Acute Infections: Lung ... Chronic Infections: TB ... Autoimmunity: RA, GPA #Cavitary ... #Lung #Disease
Cavitary Lesion with Air-Fluid Level on Chest XRay

70+ year old man with PMH of latent TB
Cavitary Lesion ... PMH of latent TB ... is his original CXR ... Labeled CXR: ... #Cavitary #CXR
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 ... Clinical #Radiology #CXR ... #ChestXRay #Cavitary
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
affecting the lungs ... • Progressive lung ... : • Tuberculin ... and Culture • CXR ... disease • Check CXR
Lungcancer
10% of lungcancers cavitate, most commonly squamous cell carcinoma.
Small cell lungcancer does not cavitate.
Bronchoalveolar carcinoma, or
of lungcancers cavitate ... lungcancer does not cavitate ... may occasionally cavitate ... large cavitating lung ... Clinical #Radiology #CXR
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
affecting the lungs ... • Progressive lung ... : • Tuberculin ... and Culture • CXR ... disease • Check CXR
Nontuberculous mycobacteria
Nontuberculous mycobacteria, also known as atypical mycobacteria, are all the other mycobacteria which can cause
disease resembling TB ... pus within the cavity ... Clinical #Radiology #CXR ... Mycobacteria #NTM #Cavity
Primairy TB is usually clinically silent.
In 5% of infected individuals the immunity is inadequate and clinically
Primairy TB is usually ... On the CXR it is ... with cavitaty formation ... Clinical #Radiology #CXR ... #Cavitary #SecondaryTB