21 results
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
diseases with a nodular ... histiocytosis: early nodular ... #Clinical #Diagnosis ... Pulmonary #CTChest #Nodular ... NodularPattern #Differential
Tree-in-bud
In centrilobular nodules the recognition of 'tree-in-bud' is of value for narrowing the differential diagnosis.
Tree-in-bud describes
centrilobular nodules ... narrowing the differential ... irregular and often nodular ... identified in the lung ... TreeInBud #Diagram #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... Nodular LCH: - Sarcoidosis ... : 'signet ring sign ... central dot. - LIP #Clinical ... Comparison #Table #RadiologyAssistant
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
multiple ill-defined nodules ... the ill-defined nodules ... feeding vessel sign ... feeding vessel sign ... SepticEmboli #Cavity #RadiologyAssistant
Subacute hypersensitivity pneumonitis
The key findings in the subacute hypersensitivity pneumonitis are:
ill-defined centrilobular nodules of ground-glass opacity
centrilobular nodules ... opacity due to lung ... centrilobular nodules ... #Clinical #Radiology ... HypersensitivityPneumonitis #Nodular
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... in interstitial lung ... patterns: reticular, nodular ... is interstitial lung ... #RadiologyAssistant
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
• CT: Halo sign ... , erythematous nodules ... consolidation or nodular ... Imaging: Irregular nodules ... nodules possible
Lymphocutaneous Sporotrichiosis Infection

Landscaper w/ painless nodular rash of arm present for months wax and wane; diagnosis?
Lymphocutaneous
Landscaper w/ painless nodular ... painless, no systemic signs ... biopsy preferred Differential ... Sporotrichiosis #Infection #clinical
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
of interstitial lung ... Organizing Pneumonia - Clinical ... irregular lines, nodular ... zone, GGO, small modular ... ILD #diagnosis #management
On the left we see focal irregular septal thickening in the right upper lobe in a
mediastinal lymph nodes ... and a nodular lesion ... in the left lung ... #Clinical #Radiology ... Carcinomatosis #RadiologyAssistant