3021 results
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
Hypersensitivity, Acute Eos PNA ... COP, Chronic Eos PNA ... Lymphocytic Int PNA ... Diagnosis #pulmonary #radiology
Tree-in-Bud Sign on Chest CT
 • Multiple centrilobular nodules arranged in a linear branching pattern.
 •
NTM, atypical pna ... Pulmonary #diagnosis #radiology
Head Cheese Sign on Chest CT
 • Juxtaposition of distinct radiographic areas of low, normal and
RB, Mycoplasma pna ... Pulmonary #diagnosis #radiology
Tram Track Sign on Chest CT
 • Parallel, non-tapering airways, extending to the lung periphery.
 •
ILD, necrotizing pna ... Pulmonary #diagnosis #radiology
CT Angiogram Sign on Chest CT
 • Prominent pulm vessels traversing through an area of parenchymal
post-obstructive pna ... Pulmonary #diagnosis #radiology
Air Bronchogram Sign on Chest CT
 • Patent airways surrounded by opacified lung
 • DDx: pna,
opacified lung • DDx: pna ... Pulmonary #diagnosis #radiology
Atoll Sign (Reverse-Halo Sign) on Chest CT
 • Central GGO surrounded by a crescentic or circumferential
LG, GPA, lipoid pna ... Pulmonary #diagnosis #radiology
Crazy Paving on Chest CT
 • Thickened interlobular septa in a background of diffuse GGO's.
 •
sarcoidosis, lipoid pna ... Pulmonary #diagnosis #radiology
Patent Ductus Arteriosus (PDA) on Echocardiogram

Another great teaching clip, this time a patent ductus arteriosus (PDA).
Ductus Arteriosus (PDA ... ductus arteriosus (PDA ... Continuous Ao-to-PA ... Ductus #Arteriosus #PDA ... Echocardiogram #cardiology
Autoantibodies in Rheumatology
 • Lupus (SLE): ANA (anti-nuclear antibody), dsDNA (double-stranded DNA), Anti-Smith, Anti-Ro (SSA) and
• Lupus (SLE): ANA ... double-stranded DNA ... Anti-centromere, Scl-70 (DNA ... topoisomerase I), RNA