43 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
: 'signet ring sign ... central dot. - LIP #Clinical ... #CTChest #Cystic ... #Cysts #Differential ... #Comparison #Table
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... in interstitial lung ... low attenuation (table ... is interstitial lung ... #Diagnosis #Radiology
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
in the proper clinical ... feeding vessel sign ... feeding vessel sign ... #Clinical #Radiology ... #CXR #CTChest #
ARDS/VALI progression over the course of 1 week 
 (a) Day 1 - No pathological findings.
consolidations in lower lobes ... involvement, with “white lung ... structures help in the differential ... #Clinical #Radiology ... #CXR #ChestXRay
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
attached to the chest ... cyst in the upper ... leading to pulmonary cyst ... #Clinical #Radiology ... #CXR #Pneumothorax
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 ... bronchiectasis, as in cystic ... #Clinical #Radiology ... #CXR #CTChest #
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
before the typical cysts ... #Clinical #Diagnosis ... #CTChest #Nodular ... NodularPattern #Differential ... #Comparison #Table
Radiologists use many terms to describe areas of decreased density or lucencies within the lung, like
we describe a chest ... visible wall #CXR ... #Lucency #Differential ... #Table #CavitaryLesion ... #Diagnosis #Radiology
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Sarcoidosis: nodules ... before the typical cysts ... #Clinical #Radiology ... #HRCT #CTChest ... Pattern #Comparison #Table
Progressive Massive Fibrosis aka Complicated Silicosis.
Silicosis is a fibrotic lung disease caused by inhalation of crystalline
is a fibrotic lung ... Mediastinal lymph nodes ... Fibrosis #Silicosis #clinical ... #radiology #CXR ... #Chest #XRay #labeled