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Lung Segment Anatomy Annotated on Chest CT
Right Lung:
 • Upper Lobe: Apical, Posterior, Anterior
 • Middle
Annotated on Chest ... Lateral, Medial • Lower ... Inferior lingular • Lower ... lobes #Segments #Chest ... #CT #CTChest #pulmonary
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
or interstitial lung ... bronchiolitis, PCP. - Lower ... Diagnosis #Radiology #Pulmonary ... #CTChest #GGO #
On the left a typical case of panlobular emphysema.
There is uniform destruction of the underlying architecture
the secondary pulmonary ... Pulmonary vessels ... in the affected lung ... severe in the lower ... Clinical #Radiology #CTChest
On the left a patient who is treated with cytotoxic drugs for a hematologic malignancy.
The radiographic
honeycombing in the left lower ... like idiopathic pulmonary ... consider drug-related lung ... Clinical #Radiology #CTChest
Feeding Vessel Sign on Chest CT
 • Distinct pulmonary vessel leading into a lung nodule or
Vessel Sign on Chest ... CT • Distinct pulmonary ... leading into a lung ... doi.org/10.1016/j.chest ... #Pulmonary #diagnosis
Hemothorax on Lung POCUS with Spine Sign

GSW to left chest.  Perisplenic window focusing on lower
Hemothorax on Lung ... GSW to left chest ... window focusing on lower ... chest seen. ... clinical #ultrasound #Pulmonary
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Upper lung zone ... - Sarcoidosis Lower ... - Aspiration - Pulmonary ... Diagnosis #Radiology #Pulmonary ... Distribution #Upper #Lower
Pneumonia on Chest Xray and POCUS

Extensive pneumonia in lower left lobe (red arrow). 
POCUS: Dynamic air
Pneumonia on Chest ... Extensive pneumonia in lower ... Comparison #Clinical #Lung ... #Pulmonary #Clinical
Cystic Lung Disease
Upper Lobe Predominant: 
Langerhans Cell Histiocytosis, Pneumocystis Jiroveci, Hypersensitivity Pneumonitis, Neurofibromatosis Type 1, Paracoccidioidomycosis,
Cystic Lung Disease ... (LCDD), Cystic Pulmonary ... Metastatic Disease Lower ... Bronchiolitis, Pulmonary ... nickmmark #Cystic #Lung
Halo Sign on Chest CT
 • SPN or mass surrounded by a circumferential GGO
 • DDx:
Halo Sign on Chest ... sarcoidosis, mets to the lung ... doi.org/10.1016/j.chest ... Halo #Sign #CT #Lung ... #Pulmonary #diagnosis