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- •Preface
- •Contents
- •Pattern Approach for Lung Imaging
- •1: Nodule
- •Solitary Pulmonary Nodule (SPN), Solid
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Lung Cancer (Solid Adenocarcinoma)
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Carcinoid or Atypical Carcinoid
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •BALT Lymphoma
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Tuberculoma
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Hamartoma
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Sclerosing Hemangioma
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Ground-Glass Opacity Nodule
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Atypical Adenomatous Hyperplasia (AAH)
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Adenocarcinoma in Situ (AIS)
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Minimally Invasive Adenocarcinoma (MIA)
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •2: Mass
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Pulmonary Sarcoma
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Progressive Massive Fibrosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pulmonary Actinomycosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •3: Consolidation
- •Lobar Consolidation
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Lobar Pneumonia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Invasive Mucinous Adenocarcinoma
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pulmonary Infarction
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Patchy and Nodular Consolidation
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Airway-Invasive Pulmonary Aspergillosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pulmonary Cryptococcosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •IgG4-Related Lung Disease
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Lymphomatoid Granulomatosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •4: Beaded Septum Sign
- •Diseases Causing the Sign
- •Distribution
- •Clinical Considerations
- •References
- •5: Comet Tail Sign
- •Diseases Causing the Sign
- •Distribution
- •Clinical Considerations
- •Rounded Atelectasis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •6: CT Halo Sign
- •Diseases Causing the Sign
- •Distribution
- •Clinical Considerations
- •Angioinvasive Pulmonary Aspergillosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Metastatic Hemorrhagic Tumors
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pulmonary Endometriosis with Catamenial Hemorrhage
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •7: Galaxy Sign
- •Diseases Causing the Sign
- •Distribution
- •Clinical Considerations
- •Galaxy Sign in Pulmonary Tuberculosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •8: Reversed Halo Sign
- •Diseases Causing the Sign
- •Distribution
- •Clinical Considerations
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pulmonary Mucormycosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Lymphomatoid Granulomatosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •9: Tree-in-Bud Sign
- •Diseases Causing the Sign
- •Distribution
- •Clinical Considerations
- •Aspiration Bronchiolitis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Foreign-Body-Induced Pulmonary Vasculitis (Cellulose and Talc Granulomatosis)
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •Diseases Causing the Sign
- •Distribution
- •Clinical Considerations
- •Bronchial Atresia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Bronchial Tuberculosis and Mucoid Impaction
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Foreign-Body Aspiration
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Allergic Bronchopulmonary Aspergillosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •11: Lobar Atelectasis Sign
- •Disease Causing the Sign
- •Distribution
- •Clinical Considerations
- •Right Upper Lobar Atelectasis
- •Left Upper Lobar Atelectasis
- •Right Middle Lobar Atelectasis
- •Lower Lobar Atelectasis
- •References
- •Cavity
- •Diseases Causing the Cavity
- •Distribution
- •Clinical Considerations
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Langerhans Cell Histiocytosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Septic Pulmonary Embolism
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Cavitary Pulmonary Tuberculosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Paragonimiasis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Cyst
- •Diseases Causing the Cyst
- •Distribution
- •Clinical Considerations
- •Blebs and Bullae
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Pulmonary Sequestration
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Intrapulmonary Bronchogenic Cyst
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Traumatic Lung Cysts
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •References
- •Mosaic Attenuation
- •Diseases Causing the Mosaic Attenuation Pattern
- •Distribution
- •Clinical Considerations
- •Cystic Fibrosis
- •Pathology and Pathogenesis
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Constrictive Bronchiolitis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Chronic Pulmonary Thromboembolism
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Idiopathic Pulmonary Arterial Hypertension
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Airway Disease (Bronchiectasis and Bronchiolectasis)
- •Distribution
- •Clinical Considerations
- •Swyer-James-MacLeod Syndrome
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Dyskinetic Cilia Syndrome
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •14: Air-Crescent Sign
- •Diseases Causing the Sign
- •Distribution
- •Clinical Considerations
- •Aspergilloma
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Rasmussen’s Aneurysm
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •15: Signet Ring Sign
- •Diseases Causing the Sign
- •Distribution
- •Clinical Considerations
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •16: Interlobular Septal Thickening
- •Smooth Septal Thickening
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Pulmonary Edema
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Niemann–Pick Disease
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •Nodular Septal Thickening
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Pulmonary Lymphangitic Carcinomatosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT-Pathology Comparisons
- •Patient Prognosis
- •References
- •17: Honeycombing
- •Honeycombing with Subpleural or Basal Predominance
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Asbestosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Honeycombing with Upper Lung Zone Predominance
- •Diseases Causing the Pattern and Distribution
- •Distribution
- •Clinical Considerations
- •Idiopathic Familial Pulmonary Fibrosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Chronic Hypersensitivity Pneumonia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •End-stage Fibrotic Pulmonary Sarcoidosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •18: Small Nodules
- •Small Nodules with Centrilobular Distribution
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Mycoplasma Pneumoniae Pneumonia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Diffuse Panbronchiolitis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Follicular Bronchiolitis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pulmonary Tumor Embolism
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Pneumoconiosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pulmonary Sarcoidosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pulmonary Alveoloseptal Amyloidosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Small Nodules with Random (Miliary) Distribution
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Miliary Tuberculosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Miliary Metastasis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •19: Multiple Nodular or Mass(-like) Pattern
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Pulmonary Metastasis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pulmonary Lymphoma
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Amyloidomas
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •ANCA-Associated Granulomatous Vasculitis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •Ground-Glass Opacity with Reticulation and Fibrosis
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Ground-Glass Opacity with Reticulation, but without Fibrosis (Crazy-Paving Appearance)
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Pneumocystis jirovecii Pneumonia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Lipoid Pneumonia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pulmonary Alveolar Proteinosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Mucinous Adenocarcinoma or Adenocarcinoma in Situ, Diffuse Form
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Desquamative Interstitial Pneumonia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Ground-Glass Opacity without Reticulation, with Small Nodules
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Subacute Hypersensitivity Pneumonitis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Cytomegalovirus Pneumonia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Diffuse Alveolar Hemorrhage
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Ground-Glass Opacity without Reticulation, Diffuse Distribution
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Acute Hypersensitivity Pneumonitis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Acute Eosinophilic Pneumonia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •22: Consolidation
- •Consolidation with Subpleural or Patchy Distribution
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Cryptogenic Organizing Pneumonia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Chronic Eosinophilic Pneumonia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Churg–Strauss Syndrome
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Radiation Pneumonitis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Consolidation with Diffuse Distribution
- •Diseases Causing the Pattern
- •Distribution
- •Clinical Considerations
- •Viral Pneumonias
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Acute Interstitial Pneumonia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Diffuse Alveolar Hemorrhage
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •23: Decreased Opacity with Cystic Walls
- •Cavities
- •Diseases Causing Cavities
- •Distribution
- •Clinical Considerations
- •Rheumatoid Lung Nodules
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Cavitary Metastasis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Cysts
- •Diseases Causing Multiple Cysts
- •Distribution
- •Clinical Considerations
- •Lymphangioleiomyomatosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Lymphocytic Interstitial Pneumonia
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •Emphysema
- •Distribution
- •Clinical Considerations
- •Centrilobular Emphysema
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •Patient Prognosis
- •Paraseptal Emphysema
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •Patient Prognosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •Patient Prognosis
- •References
- •24: Decreased Opacity without Cystic Walls
- •Mosaic Attenuation, Vascular
- •Distribution
- •Clinical Considerations
- •Airway Diseases Causing Mosaic Attenuation
- •Distribution
- •Clinical Considerations
- •Asthma
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •Distribution
- •Clinical Considerations
- •Cystic Fibrosis
- •Pathology and Pathogenesis
- •Symptoms and Signs
- •CT Findings
- •CT–Pathology Comparisons
- •Patient Prognosis
- •References
- •26: Pneumonia
- •Lobar Pneumonia
- •Bronchopneumonia
- •Interstitial Pneumonia
- •27: Drug-Induced Lung Disease
- •Interstitial Pneumonitis and Fibrosis
- •Eosinophilic Pneumonia
- •Cryptogenic Organizing Pneumonia
- •Diffuse Alveolar Damage
- •Hypersensitivity Pneumonia
- •References
- •Systemic Lupus Erythematosus (SLE)
- •Rheumatoid Arthritis (RA)
- •Progressive Systemic Sclerosis (PSS)
- •Sjögren’s Syndrome
- •Mixed Connective Tissue Disease
- •Ankylosing Spondylitis
- •References
142 |
15 Signet Ring Sign |
|
|
Table 15.1 Common diseases manifesting as signet ring sign
Disease |
Key points for differential diagnosis |
Bronchiectasis |
Bronchial dilatation with peribronchial |
|
thickening |
Proximal interruption |
Complete absence of the mediastinal |
of pulmonary artery |
portion of the right main pulmonary |
|
artery, septal thickening |
Patient Prognosis
Pulmonary hypertension affects 19–25 % of patients with pulmonary artery interruption and is the most important determinant of the prognosis [4].
3.Castaner E, Gallardo X, Rimola J, et al. Congenital and acquired pulmonary artery anomalies in the adult: radiologic overview. Radiographics. 2006;26:349–71.
4.Bouros D, Pare P, Panagou P, Tsintiris K, Siafakas N. The varied manifestation of pulmonary artery agenesis in adulthood. Chest. 1995;108:670–6.
5.Morgan PW, Foley DW, Erickson SJ. Proximal interruption of a main pulmonary artery with transpleural collateral vessels: CT and MR appearances. J Comput Assist Tomogr. 1991;15:311–3.
6.Ryu DS, Spirn PW, Trotman-Dickenson B, et al. HRCT findings of proximal interruption of the right pulmonary artery. J Thorac Imaging. 2004;19:171–5.
7.Aquino SL, Kee ST, Warnock ML, Gamsu G. Pulmonary aspergillosis: imaging findings with pathologic correlation. AJR Am J Roentgenol. 1994;163:811–5.
References
1.Hansell DM, Bankier AA, MacMahon H, McLoud TC, Muller NL, Remy J. Fleischner Society: glossary of terms for thoracic imaging. Radiology. 2008;246:697–722.
2.Marshall GB, Farnquist BA, MacGregor JH, Burrowes PW. Signs in thoracic imaging. J Thorac Imaging. 2006;21:76–90.
Part II
Diffuse Lung Diseases
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