| Preface | 6 |
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| Contents | 8 |
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| Contributors | 10 |
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| 1 A Clinical Approach to Rare Lung Diseases | 13 |
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| Introduction | 13 |
| Diagnostic Evaluation | 15 |
| History | 15 |
| Breathlessness | 16 |
| Chest Discomfort | 16 |
| Respiratory Sounds or Noises | 17 |
| Medical History | 17 |
| Family/Social History | 17 |
| Occupational/Environmental History | 17 |
| Review of Systems | 18 |
| Physical Examination | 18 |
| Inspection | 18 |
| Palpation and Percussion | 18 |
| Auscultation | 19 |
| Imaging Studies | 19 |
| Physiologic Studies | 20 |
| Other Studies | 21 |
| Pulmonary Differential Diagnosis of Rare or Unusual Conditions | 22 |
| References | 41 |
| 2 Clinical Trials for Rare Lung Diseases | 43 |
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| Introduction | 44 |
| A Hierarchy of Study Designs | 46 |
| Summary | 49 |
| References | 49 |
| 3 Idiopathic and Familial Pulmonary Arterial Hypertension | 51 |
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| Historical Review of Pulmonary Arterial Hypertension | 52 |
| Clinical History | 52 |
| Development of Clinical Classifications | 52 |
| Epidemiology of Pulmonary Arterial Hypertension | 54 |
| Incidence and Natural History | 54 |
| Prognostic Factors | 54 |
| Clinical Assessment of Pulmonary Arterial Hypertension | 55 |
| Defining Characteristics | 55 |
| Clinical History | 55 |
| Physical Examination Findings | 55 |
| Diagnostic Testing | 56 |
| Electrocardiography | 56 |
| Chest Radiography | 57 |
| Doppler Echocardiography | 57 |
| Evaluation of the Etiology of Pulmonary Hypertension | 58 |
| Pulmonary Function Testing | 59 |
| Evaluation for Thromboembolic Disease | 59 |
| Radiographic Testing | 59 |
| Serologic and Laboratory Testing | 60 |
| MRI | 60 |
| Confirmation of Presence of Pulmonary Arterial Hypertension (PAH) | 60 |
| Pathology | 61 |
| Genetics | 63 |
| History | 63 |
| Identification of BMPR2 Gene Mutations | 64 |
| Genetic Testing and Counseling | 66 |
| Potential Modifiers and Other Genes | 66 |
| Pathogenesis | 67 |
| Endothelial Dysfunction | 68 |
| Nitric Oxide | 69 |
| Prostacyclin | 69 |
| Thromboxane | 70 |
| Endothelin | 70 |
| Growth Factors | 70 |
| Serotonin | 71 |
| Bone Morphogenic Proteins (BMPs), Transforming Growth Factor- (TGF-), and Smad Signaling | 71 |
| Vasoactive Intestinal Peptide (VIP) | 72 |
| Tenascin-C (TN-C) | 72 |
| Elastase | 73 |
| S100A4 | 73 |
| Inflammation | 73 |
| Viral Infection | 73 |
| Ion Channels | 74 |
| Rho-Kinase | 74 |
| Current Therapies for Pulmonary Hypertension | 75 |
| General Measures | 75 |
| Conventional Therapies | 75 |
| Calcium Channel Blockers | 76 |
| Targeted Pulmonary Arterial Hypertension Therapies | 76 |
| Prostanoids | 76 |
| Endothelin Receptor Antagonists | 77 |
| Phosphodiesterase Inhibitors | 78 |
| Interventional Procedures | 78 |
| Future Directions | 79 |
| Diagnosis and Management | 79 |
| Pharmacotherapies | 79 |
| Genetics | 80 |
| Pathobiology and Cell-Based Therapies | 80 |
| References | 81 |
| 4 Lymphangioleiomyomatosis | 97 |
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| Introduction | 98 |
| Epidemiology | 98 |
| Genetic Basis and Molecular Pathology | 100 |
| Overview | 100 |
| Tuberous Sclerosis Complex-Associated LAM | 100 |
| Sporadic LAM | 101 |
| LAM and the mTOR Signaling Cascade | 102 |
| The Cell of Origin of LAM | 104 |
| Why Does LAM Occur in Women? | 105 |
| Why Is LAM Associated with Cystic Lung Disease? | 106 |
| Clinical Presentation | 107 |
| Physical Examination | 108 |
| Diagnosis | 108 |
| Symptomatic Women Without a Prior Chest CT | 108 |
| Symptomatic or Asymptomatic Patient with Cystic Change on a High-Resolution Chest CT | 109 |
| Pathology | 109 |
| Physiology | 111 |
| Radiology | 111 |
| Clinical Course and Management | 112 |
| Pulmonary Function | 112 |
| Renal Angiomyolipomas, Lymphadenopathy, and Lymphagiomyo
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