Disease
|
Clinical manifestations
|
Diagnosis
|
Symptoms
|
Physical exam
|
Lab findings
|
Imaging
|
Gold standard
|
Cough
|
Dyspnea
|
Hemoptysis
|
Fever
|
History/Exposure
|
Cyanosis
|
Clubbing
|
JVD
|
Peripheral edema
|
Auscultation
|
Other prominent findings
|
CXR
|
CT
|
DLCco
|
|
Acute Respiratory Distress Syndrome (ARDS)
|
-
|
+
|
-
|
-
|
Inciting event, such as:
|
+
|
-
|
-
|
-
|
|
- Initially respiratory alkalosis transforming to respiratory acidosis
|
- BNP level of less than 100 pg/mL
- PaO2 / FiO2 <300
- CBC
- Leukopenia
- Leukocytosis
- Thrombocytopenia
|
- Bilateral pulmonary infiltrates
- Initially patchy peripheral
- Later diffuse bilateral
- Ground glass
- Frank alveolar infiltrate
|
- Bronchial dilatation within areas of ground-glass opacification
|
↓
|
|
Bronchitis
|
Acute
|
+
|
-
|
+/-
|
+
|
-
|
-
|
-
|
-
|
-
|
- Diffuse wheezes
- High-pitched continuous sounds
- The use of accessory muscles
- Prolonged expiration
- Rhonchi
- Rales
|
|
|
|
|
↓
|
|
Chronic
|
+
|
+
|
-
|
-
|
- A positive history of chronic productive cough
- Shortness of breath
|
+
|
-
|
+
|
+
|
|
|
|
- Radiolucency
- Diaphragmatic flattening due to hyperinflation
- Increased retrosternal airspace on the lateral radiograph
|
|
-
|
|
Hypersensitivity Pneumonitis
|
+
|
+
|
-
|
+
|
- History of allergen exposure
|
-
|
+
|
-
|
-
|
|
- Constitutional symptoms
- Weight loss
- Anorexia
- Muscle weakness
|
- Neutrophilia
- Elevated ESR
- Elevated CRP
- Elevated immunoglobulin
- No peripheral blood eosinophilia
|
- Poorly defined micronodular or diffuse interstitial pattern
- In chronic form
- Fibrosis
- Loss of lung volume
- Coarse linear opacities
|
- Ground-glass opacities or
- Diffusely increased radiodensities
- Diffuse micronodules
- Focal air trapping
- Mosaic perfusion
- Occasionaly thin-walled cysts
- Mild fibrotic changes
|
↓
|
|
Pneumoconiosis[1]
|
SIlicosis[2][3]
|
+
|
+
|
+/-
|
-
|
- History of substantial exposure to silica dusts
- Occupational history
- Sandblasting
- Bystanders
- Quartzite miller
- Tunnel workers
- Silica flour workers
- Workers in the scouring powder industry
|
+
|
+
|
+
|
-
|
- Lungs are hyperresonant
- Finecrackles upon auscultation of the lung bases or apices, unilaterally or bilaterally
- Rhonchi
- Bronchial breath sounds
- Expiratory wheezing with normal or delayed expiratory phase
- Wheezing may be present
- Egophony present
- Bronchophony present
- Increased tactile fremitus.
- Loud P2
|
- Increased susceptiblity to tuberculosis.
|
- Respiratory acidosis
- Abnormal sputum
- CBC
- Anemia
- Neutrophilia
- Elevated ESR,
- Elevated CRP
- Elevated immunoglobulin
|
- Small round opacities
- Symmetrically distributed
- Upper-zone predominance
- Diffuse interstitial pattern of fibrosis without the typical nodular opacities in chronic case
|
- Nodular changes in lung parenchyma
- Progressive massive fibrosis
- Bullae, emphysema
- Pleural, mediastinal, and hilar changes
|
↓
|
|
Asbestosis
|
- Shipyard workers
- Pipe fitting
- Insulators
|
|
- Predilection to lower lobes
- Fine and coarse linear, peripheral, reticular opacities
|
- Subpleural linear opacities seen parallel to the pleura
- Basilar lung fibrosis
- Peribronchiolar, intralobular, and interlobular septal fibrosis;
- Honeycombing
- Pleural plaques.
|
Berylliosis
|
|
|
- Hilar adenopathy
- Increased interstitial markings.
|
- Ground glass opacification
- Parenchymal nodules
- Septal lines
|
Byssinosis
|
|
- Increased susceptibility to Actinomyces and Aspergillus infection.
|
- Diffuse air-space consolidation
|
- Pulmonary fibrosis with honeycombing
- Peri bronchovascular distribution of nodules
- Ground-glass attenuations
|
Sarcodiosis
|
+
|
+
|
+
|
+
|
- African Americans
- Autoimmune
|
-
|
-
|
-
|
-
|
- Usually normal
- Crackles may be audible
|
- Dermatologic manifestations
- Ocular involvement
- Osseous involvement
- Heart failure from cardiomyopathy
- Lymphocytic meningitis
- Cranial nerve palsies
|
- Hypercalcemia or hypercalciuria
- Elevated 1, 25-dihydroxyvitamin D levels
- Elevated angiotensin-converting enzyme (ACE)
|
- Bilateral hilar lymphadenopathy
|
- High-resolution CT (HRCT) scanning of the chest may identify
- Active alveolitis
- Fibrosis
|
↓
|
|
Pleural Effusion
|
+
|
+
|
+/-
|
+/-
|
Transudate
- Congestive heart failure
- Cirrhosis (hepatic hydrothorax)
- Atelectasis (may be due to occult malignancy or pulmonary embolism)
- Hypoalbuminemia
- Nephrotic syndrome
Exudate
- Parapneumonic causes
- Malignancy (most commonly lung or breast cancer, lymphoma, and leukemia; less commonly ovarian carcinoma, stomach cancer, sarcomas, melanoma)
- Pulmonary embolism
- Collagen-vascular conditions (rheumatoid arthritis, systemic lupus erythematosus
- Tuberculosis (TB)
- Pancreatitis
|
+/-
|
+/-
|
+/-
|
+/-
|
- Dullness to percussion
- Decreased tactile fremitus,
- Asymmetrical chest expansion,
- Diminished or delayed expansion on the side of the effusion:
- Diminished or inaudible breath sounds
- Pleural friction rub
|
- Peripheral edema, distended neck veins, and S3 gallop suggest congestive heart failure.
- Edema may also be a manifestation of nephrotic syndrome, pericardial disease, or, when combined with yellow nailbeds, the yellow nail syndrome.
- Cutaneous changes and ascites suggest liver disease.
- Lymphadenopathy or a palpable mass suggests malignancy.
|
- Thoracentesis
- Exudate
- Transudate
- LDH, Glucose, cytology
- Other specific labs of underlying etiology
|
Supine
- Blunting of the costophrenic angle
- Homogenous increase in density spread over the lower lung fields
Lateral decubitus
- Free flowing effusion as layers
|
- Thickened pleura
- Mild effusions can aslo be detected
|
↓
|
|
Neuromuscular disease
|
Scoliosis
|
-
|
+
|
-
|
-
|
|
-
|
-
|
-
|
-
|
|
- In severe scoliosis, the rib cage may press against the lungs making it more difficult to breathe.
|
- R/0 genetic conditions
- Marfan's syndrome
- Edward's syndrome
- Total lymphocyte count (should be >1500/μL)
- Nutritional status must be assessed
|
- Accurate depiction of the true magnitude of the spinal deformity can be assessed by supine anteroposterior (AP) and lateral spinal radiographs
|
|
|
|
Muscular dystrophy
|
-
|
+
|
-
|
-
|
- Proximal muscle weakness (shoulder and pelvic girdle)
|
-
|
-
|
-
|
-
|
- Decreased breathe sounds
- Decreased chest expansion
|
|
- Elevated CPK and aldolase
- +ANA
- +Anti-Jo abs
- Elevated ESR, CRP and RF
|
|
|
|
|
ALS
|
-
|
+
|
-
|
-
|
|
-
|
-
|
-
|
-
|
- Decreased breathe sounds
- Decreased chest expansion
|
- Symptoms begin with limb involvement diue to muscle weakness and atrophy.
- Cognitive or behavioral dysfunction
- Sensory nerves and the autonomic nervous system are generally unaffected
|
N/A
|
Not significant/diagnostic
|
Not significant/diagnostic
|
-
|
- Nerve conduction studies and needle electromyography (EMG)
|
Myasthenia gravis
|
-
|
+
|
-
|
+
|
H/O of difficulty getting up from chair
|
-
|
-
|
-
|
-
|
- Decreased breathe sounds
- Decreased chest expansion
|
- Extraocular, bulbar, or proximal limb muscles.
- Breathing as rapid and shallow,
- Respiratory muscle weakness can lead to acute respiratory failure may require immediate intubation.
|
- Anti–acetylcholine receptor (AChR) antibody (Ab) test +
|
- Thymoma as an anterior mediastinal mass.
|
- Thymoma as an anterior mediastinal mass.
|
|
|
Interstitial (Nonidiopathic) Pulmonary Fibrosis
|
|
+
|
++
|
+
|
-
|
- Connective-tissue disorder
|
+
|
+
|
+
|
+
|
|
|
- Elevated ESR
- Serologic testing for ANA, RF, ANCA & ASCA may be positive
|
- Reticular and/or nodular opacities
- Honeycomb appearance (late finding)
|
- Bilateral reticular and nodular interstitial infiltrates
|
↓
|
Video-assisted thoracoscopic lung biopsy
|
Lymphocytic Interstitial Pneumonia
|
|
+
|
+
|
+
|
+
|
- Autoimmune
- Lymphoproliferative disorders
|
-
|
+
|
-
|
-
|
|
|
- Polyclonal hypergammaglobulinemia
- Increased LDH
|
- Bibasilar interstitial or micronodular infiltrates
|
- Determines the degree of fibrosis
- Cysts (characterstic)
|
N
|
Open lung biopsy
|
Obesity
|
|
+
|
+
|
-
|
-
|
- Overweight
- Diabetes mellitus
- Asthma
|
-
|
-
|
-
|
+
|
|
|
|
- X ray findings are often limited due to body habitus
|
- CT findings are variable and depends upon severity of obesity
|
N
|
Clinical
|
Pulmonary Eosinophilia
|
|
+
|
+
|
+
|
+
|
Infections
- Prasitic
- Fungal
- Mycobacterial
|
+
|
-
|
+
|
+
|
|
|
- Leukocytosis with eosinophilia (> 250/µL)
|
- Interstitial or diffuse nodular densities
|
- Determines extent and distribution of the disease
- Interstitial infiltrates
- Cysts and nodules
|
↓
|
Biopsy of lesion (skin or lung)
|