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35 Cards in this Set
- Front
- Back
Accessory fissures
Accessary fissure |
Azygos fissure
Inferior accessory fissure Superior accessory fissure Left minor fissure |
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Azygos fissure
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defining azygos lobe: parts of the apical or posterior segments of RUL
consists of four layers of pleura (two parietal and two visceral) contains the arch of the azygos vein inferiorly Frontal film: a curvilinear appearance adjacent to the right mediastinum, convex laterally; "teardrop" appearance of the azygos vein at the inferior extent of the fissure CT: a thin, curved line, extends from the right brachiocephalic vein anteriorly, to a position adjacent to the right posterolateral aspect of T4 or T5 vertebral body |
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Inferior accessory fissure
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seperates the medial basal segment of either lower lobe from the remaining basal segments.
CXR: extending superiorly and medially from the medial third of the hemidiaphragm CT: extending laterally and anteriorly from the region of inferior pulmonary ligament to joint the major fissure |
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Superior accessory fissure
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demarcates the superior segmental from the remainder of the lower lobe.
More common on the right about the same level as the minor fissure |
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left minor fissure
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10% of normal lung
separating the lingula from the remainder of the LUL |
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Hilum Overlay Sign 代表意義
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The mass does not arise from the hilum, 且大多數lesion會位在anterior mediastinum
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Lordotic view的目的
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要看清楚兩側的pulmonary apex
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何謂Luftsichel sign
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superior seg of lower lobe causes a crescent lucency btw the aortic arch and the atelectic upper lobe
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IABP (intra-aortic balloon pump) 正確位置
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Position:Tip just distal to the Lt subclavian artery
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Congenital absence of right pulmonary artery (cxr)
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Ipsilateral small lung volume with tracheal deviation, hemidiaphragm elevation, hyperaerated left lung and right side narrowed intercostal spaces.
Loss of normal right pulmonary vascularity. disruption of normal embryonic development of the primitive sixth aortic arch results in an anomaly in the pulmonary arteries. Abnormalities in the rotation and migration of the primitive arch may result in agenesis of one pulmonary artery. Absence of the left pulmonary artery tends to be associated with an intracardiac defect, particularly the Tetralogy of Fallot. Absence of the right pulmonary artery is usually not associated with any other anomaly of the heart or great vessels. aortic arch is usually on the side opposite to the absent pulmonary artery. |
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Accessory cardiac bronchus
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from the medial wall of the bronchus intermedius or RLL bronchus, extend inferiorly and medially toward the mediastinum.
A short, blind-ending bronchial stump without associated alveolar tissue; or a longer bronching bronchus with rudimentary tissue. |
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Pulmonary actinomycosis invading chest wall
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D/D:
tuberculosis empyema necessitatis |
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Cystic adenoid carcinoma of trachea
Adenoid cystic carcinoma, trachea; Adenoid cystic carcinoma, lower trachea and left main bronchus. Cylindroma |
originating from tracheal mucous glands, often from the posterolateral tracheal wall
Age peak: 4th–5th decade typical Hx of refractory “asthma” endotracheal mass with extratracheal extension; resembling an iceberg in that the intraluminal component of the tumor is much smaller than the extraluminal component. a diffuse or circumferential wall thickening of the trachea, a soft-tissue mass filling the airway. striking tendency toward submucosal extension and manifest with circumferential and infiltrative growth. The longitudinal extent of the tumor is greater than its transaxial extent. more aggressive than carcinoid with propensity for local invasion + distant metastases (lung, bone, brain, liver) in 25% |
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Alpha-1 antitrypsin deficiency
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lower lobe predominant, panlobular emphysema
Bullae common (33%), bronchial wall thickening and bronchiectasis (40%) single gene chromosome 14 symptoms rarely develop before age 55 Hepatosplenomegaly, may lead to cirrhosis |
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Amiodarone therapy
Amiodarone intoxication Amiodarone pulmonary toxication (Drug-induced pneumonitis) |
1. Amiodarone: triiodinated compound, tx for arrhythmias
2. hyperdense liver on CT (MR appearance of the liver is normal) 3. hypersensitivity pneumonitis or interstitial/alveolar pneumonitis 4. induce NSIP |
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Amyloidosis(cxr, SLE hx)
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Primary or secondary to chronic malignancies or inflammatory disease
Bleeding common due to amyloid deposition in vessels (造成血管fragility) Multiple calcified tracheal or pulmonary nodules |
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Arterial sequestration (???)
Anomalous systemic arteries without sequestration ?? |
13741394
72M, hemoptysis anomalous artery from aorta to a normal lung 4167357, 34M cough with hemoptysis The anomalous artery was smaller in diameter, running caudally at its origin, tortuous until it ran cranially to the proximal lower lobe like a "swan neck-shaped" curve, and then it was dilated aneurysmatically running along with a normal pulmonary artery into all the basal segments. |
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Aspergillosis
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A. fumigatus
1. Invasive aspergillosis (1) Angioinvasive aspergillosis (2) Airway invasive aspergillosis (Aspergillus bronchopneumonia) (3) Acute tracheobronchitis 2. Semi-invasive aspergillosis (chronic necrotizing aspergillosis) 3. Allergic aspergillosis 4. Aspergilloma |
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Mackline effect
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Mecklin effect:
the sequence of events in the development of pneumomediastinum as follows: (1) alveolar rupture, (2) air dissection along the bronchovascular sheath, and (3) free air reaching the mediastinum. |
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Esophageal rupture 又稱?Image 上有何特徵?
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1. Boerhaave syndrome
2. pneumohydrothorax pneumomediastinum esophageal rupture |
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Pulmonary botryomycosis
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rare, "actinomycetoid" tissue response to infection with pyogenic bacteria.
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年輕人的bronchiectasis
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cystic fibrosis
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Bronchial atresia
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Narrowing or obliteration of a lobar, segmental or subsegmental bronchus
LUL> RUL>RML>lower lobes Detected incidentally in adults Mucus plug distal to obstructed bronchi Distal lung Lucent Increased in volume Air-trapping in expiration R/O endobronchial lesion |
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Bronchial isomerism
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bilateral symmetry of the bronchi and associated pulmonary lobe.
May a/w congenital heart disease |
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Asplenia (cxr) CT chest特徵?
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bilaterally right-sided
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Polysplenia chest特徵?
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bilaterally left-sided
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CAISSON DIS (潛水夫症) WITH PUL EDEMA
Decompression sickness; divers' disease, the bends or caisson disease |
the precipitation of dissolved gasses into bubbles inside the body on depressurisation.
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Calcified lung tumor
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Metastasis from osteogenic sarcoma, colon, papillary adenocarcinoma(GI)
Fat containing hamartoma Hemangioma |
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Carcinoid tumor
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the best-differentiated type of neuroectodermal carcinoma.
Slow-growing, locally invasive. 40-60y, but not uncommon younger than 20y No association with smoking Central type: 80% arising from the main, lobar (most common), or segmental bronchi. discrete mass lesions in or near the hila. have a large endobronchial component and appear on CT as intraluminal masses. associated with bronchial obstruction, atelectasis or consolidation, typically limited to a lobe or segment. Highly vascular (supplied by bronchial circulation) and dense enhance. On CT, calcification in 40%. local extension of typical carcinoid tumors beyond the bronchial wall is common. (most extend through bronchial wall thus involving bronchial lumen + parenchyma (= collar button lesion)) Peripheral nodular or mass: 20% may be asymptomatic well-defined, round or oval and slightly lobulated. Tx: surgical resection. bronchial sleeve resection. |
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Pulmonary lymphangitic carcinomatosis (PLC)
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cancer hx (e.g. breast, lung, thyroid, prostatic)
smooth and nodular thickening of the septa with preservation of architecture of the secondary pulmonary lobule. LN enlargement. Pleural effusion. |
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Castleman’s disease全名?Classification? CT 特徵?
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1. Angiofollicular lymphoid hyperplasia; giant benign lymph node hyperplasia
2. Hyaline vascular type (90%) and Plasma cell type (10%) 3. Hyaline vascular type(90%): localized mediastinal or hilar mass, children or young adult, asymptomatic, benign behavior 4. Plasma cell type (10%) : multicentric process, 40-50y/o, a/w generalized LAP and hepatosplenomegaly, systeminc illness, progressive 5. CT:dense contrast enhancement, Ca++ are occasionally seen (central, dense, or flocculent) |
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Chicken pox pneumonia
Varicella-zoster virus |
32058303, 31F, fever, rapid course
5830804, 30M Varicella--chickenpox, very contagious skin infection. 1/6 with skin infection develop coincident pulmonary infection. Zoster--shingles. High fever that is usually rapidly followed by a painful skin rash. CXR: diffuse small nodules in the range of 5 to 10mm that progress to air-space consolidation rather rapidly. Hilar enlargement. Rare pleural effusion. (<2% involute and calcify to form innumerable small calcified nodules) Tx: acyclovir (Untreated adult varicella pneumonia has a 10% fatality rate. It is as high as 40% in pregnant/post partum women and immunosuppressed patients. ) |
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Cleidocranial dysplasia
Cleidocranial dysostosis |
The collarbones are partly or completely missing.
The fontanelles of the skull are late in closing, or never close. Extra teeth. Permanent teeth not erupting(長出). Bossing (= bulging) of the forehead. |
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Cor pulmonale (cxr)
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hypertrophy of the right ventricle resulting from disease of the lungs
acute cor pulmonale is characterized by dilation and failure of the right side of the heart due to pulmonary embolism in later stages there is usually right-sided cardiac failure. CXR: Enlargement of the central pulmonary arteries with oligemic peripheral lung fields Right ventricular hypertrophy increase of the transverse diameter of the heart shadow to the right on the posteroanterior view filling of the retrocardiac space on the lateral film Pulmonary hypertension: increased PA size Right descending pulmonary a. > 16mm left pulmonary artery > 18mm |
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Pulmonary cryptococcosis
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stains by India Ink
well-circumscribed mass (40%) of 2–10 cm in diameter, usually peripheral location lobar/segmental consolidation (35%) cavitation (15%) hilar/mediastinal adenopathy (12%) calcifications (extremely rare) interstitial pneumonia (rare, in AIDS patients) |