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Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
to distinguish perilymphatic ... random (miliary) or perilymphatic ... dealing with a periplymphatic ... Pulmonary #HRCT #CTChest
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
Perilymphatic distribution ... Perilymphatic nodules ... differential diagnosis of perilymphatic ... Pulmonary #HRCT #CTChest ... #Perilymphatic
On the left another typical case of sarcoidosis.
In addition to the perilymphatic nodules, there are multiple
addition to the perilymphatic ... Clinical #Radiology #CTChest ... #Sarcoidosis #Perilymphatic
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
: nodules with perilymphatic ... Radiology #HRCT #CTChest
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
: nodules with perilymphatic ... Radiology #HRCT #CTChest
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
- Sarcoidosis: perilymphatic ... Diagnosis #Radiology #CTChest
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
: nodules with perilymphatic ... : nodules with perilymphatic ... Radiology #Pulmonary #CTChest
On the left a typical case of perilymphatic distribution of nodules in a patient with sarcoidosis.
Notice
typical case of perilymphatic ... fissures indicating a perilymphatic ... Clinical #Radiology #CTChest ... #Sarcoidosis #Perilymphatic
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
centrilobular, perilymphatic ... Pulmonary #HRCT #CTChest
The distribution of nodules shown on HRCT is the most important factor in making an accurate
three categories: perilymphatic ... Perilymphatic distribution ... patients with a perilymphatic ... Unlike perilymphatic ... Centrilobular #Perilymphatic