20 results
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... on HRCT Most of ... disease comes from HRCT ... On HRCT there are ... Pattern #Differential
Approach to the diagnosis of chronic hypersensitivity pneumonitis. 
*Consider additional test: bronchoscopy with bronchoalveolar lavage, transbronchial
the diagnosis of chronic ... cHP = chronic hypersensitivity ... pneumonitis; HRCT ... tomography; UIP = usual interstitial ... algorithm #HP #ILD
Causes of Thrombocytosis - Differential Diagnosis Algorithm
Spurious:
 • Artifact (redo CBC)
Autonomous:
 • Essential thrombocytosis
 • Polycythemia
Thrombocytosis - Differential ... Polycythemia Vera • Chronic ... : • Acute or Chronic ... Inflammatory: • IBD ... Iron deficiency anemia
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
= (Retic %) x (Hct ... of chronic inflammation ... deficiencies: Chronic ... Production #Index #hematology ... #anemia #differential
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
Platelet Count - Differential ... → Refer to hematology ... hemolysis, deficiency anemia ... • Infections: Chronic ... Thrombocytosis #Platelets #Differential
UIP
UIP is a histologic pattern of pulmonary fibrosis.
On a chest X-ray UIP manifests as a reticular
A HRCT is needed ... Here a CXR with ... attributed to chronic ... HRCT demonstrated ... UIP #Reticular #Interstitial
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
BOOP • Type of interstitial ... - Imaging: • CXR ... , cavities • HRCT ... organizing pneumonia, Chronic ... BOOP #pulmonary #ILD
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
Causes of Chronic ... Dyspnea - Differential ... Neoplasm Pulmonary Interstitium ... • ILD • CHF ... Pulmonary - Other • Anemia
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
HP (right) Differential ... Subacute stage: - RB-ILD ... Chronic stage: - ... show very similar HRCT ... Fibrosis #Mimic #ILD
Clinical Classification of Pulmonary Hypertension

1. Pulmonary arterial hypertension from pulmonary vasculopathy
Idiopathic pulmonary arterial hypertension
Heritable gene mutations
hemolytic anemia ... pulmonary disease Interstitial ... Chronic thromboembolic ... multifactorial mechanisms Hematologic ... Classification #Diagnosis #Differential