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 ... Interstitial #Pattern #Differential
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
bronchiolitis (RB-ILD ... Radiology #Pulmonary #HRCT ... #ChestCT #Differential
Erythrocytosis - Polycythemia Differential Diagnosis Algorithm

Elevated Hemoglobin:
 • Males: Hb > 16.5 g/dL/HCT ≥ 49%
 •
- Polycythemia Differential ... Hb > 16.5 g/dL/HCT ... : Hb > 16 g/dL/HCT ... Polycythemia #Vera #PV #Differential ... Diagnosis #Algorithm #hematology
Post-Transplantation Lymphoproliferative Disorders (PTLD)
Definition: Lymphoid and/or plasmacytic proliferations that occur as a result of immunosuppression in
• Allogeneic HSCT ... symptoms, unexplained hematologic ... Lymphoproliferative #Disorders #oncology
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
infection (IFI) in hematologic ... and allogeneic HSCT ... BAL GM does not differentiate ... 100d following HSCT ... setting of GVHD) ID
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
- Imaging: • CXR ... , cavities • HRCT ... Treatment: • Mild ... BOOP #pulmonary #ILD
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
= (Retic %) x (Hct ... Production #Index #hematology ... #anemia #differential
Differentiation Syndrome in APML
Epidemiology:
 • Incidence: common in APL (2-48% depending on the study)
 • Triggers:
5 or elevated Cr ... common • Imaging: CXR ... initiation • Differential ... diagnosis #management #hematology ... #oncology
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
cytokines (TNFa,lL1, IL6 ... PTLD), allogeneic HSCT ... treatment #summary #rheumatology
Polycythemia - Differential Diagnosis Algorithm
Polycythemia itself isn’t a diagnosis. Like many things, it is a condition
Polycythemia - Differential ... Hb>16.5 g/dL, Hct ... Hb>16.0 g/dL, Hct ... Better call hematology ... #Polycythemia #Differential