XIII - The Lung Flashcards
Atelectasis(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 480
Loss of lung volume cause by inadequate expansion of airspaces, resulting in shunting of inadequately oxygenated blood from pulmonary arteries into veins.
Resorption atelectasis(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 480
Atelectasis which occurs when an obstruction prevents air from reaching distal airways.
Compression atelectasis (aka passive or relaxation atelectasis)(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 481
Atelectasis usually associated with accumulation of fluid, blood, or air within the pleural cavity, which mechanically collapse the adjacent lung.
Contraction or cicatricial atelectasis(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 481
Atelectasis which occurs when either local or generalized fibrotic changes in the lung or pleura hamper expansion and increase elastic recoil during expiration.
Acute Respiratory Distress Syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 482
Lungs are dark red, firm, airless and heavy. There is capillary congestion, necrosis of alveolar epithelial cells, interstitial and intra-alveolar edema and hemorrhage and neutrophils in capillaries. Hyaline membrane is also characteristic, lining the alveolar ducts. SEE SLIDE 13.1
Obstructive pulmonary disease(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 483
Diffuse pulmonary disease characterized by limitation of airflow, usually resulting from an increase in resistance caused by partial or complete obstruction atvany level.
Restrictive lung disease(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 483
Diffuse pulmonary disease characterized by reduced expansion of lung parenchyma accompanied by decreased total lung capacity.
FEV1 - decreasedFVC - normal / increasedFEV1:FVC ratio - decreased. SEE SLIDE 13.2. (TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 483
Lung volumes in obstructive lung disease:FEV1FVCFEV1:FVC ratio
FEV1 - normal/decreasedFVC - decreasedFEV1:FVC ratio - near normal. SEE SLIDE 13.2. (TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 483
Lung volumes in restrictive lung diseaseFEV1FVCFEV1:FVC ratio
Emphysema(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 485
Characterized by abnormal permanent enlargement of the airspaces distal to the terminal bronchioles accompanied by destruction of their walls without obvious fibrosis. There is thinning of the alveolar walls and loss of elastic tissue. SEE SLIDE 13.3.
Centriacinar (centrilobular) Emphysema. SEE SLIDE 13.4. (TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 485
Type of emphysema involving the central or proximal parts of the acini, formed by respiratory bronchioles, while distal parts are spared. Lungs deep pink and less voluminous, affecting the upper 2/3 of the lungs. Occurs in smokers.
Panacinar (panlobular) emphysema. SEE SLIDE 13.4. (TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 485
Type of emphysema wherein the acini are uniformly enlarged from the level of the respiratory bronchiole to the terminal alveoli. Occurs more commonly in the lower lung zones. Occurs in a-antitrypsin deficiency.
Distal acinar (paraseptal) emphysema. SEE SLIDE 13.4. (TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 486
Type of emphysema wherein only the distal part is primarily involved. Lesion is adjacent to the pleura along the lobular connective tissue septa and at the lobe margins. More severe at the upper half of the lungs, forming bullae.
COPD predominantly emphysema(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 489
Barrel-chested, dyspneic, prolonged expiration, sits forward in a hunched-over position, adequate oxygenation of oxygen. “Pink puffers”.
COPD predominantly chronic bronchitis(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 489
History of recurrent infections with purulent sputum, less prominent dyspnea and respiratory drive, becomes hypoxic and are pften cyanotic and obese. “Blue bloaters”.
Chronic bronchitis(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 489
Defined as persistent productive cough for at least 3 consecutive months in at least 2 consecutive years.
Chronic bronchitis(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 489
Mucosal lining of the larger airways is usually hyperemic and swollen with edema fluid, often covered by a layer of mucinous or mucopurulent secretions. Trachea and bronchi have enlarged mucus-secreting glands.
Chronic bronchiolitis (small airway disease)(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 489
Characterized by goblet cell metaplasia, mucus plugging, inflammation and fibrosis, and sometimes complete obliteration of the lumen due to fibrosis.
Cigarette smoking(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 489
Most important underlying risk factor for chronic bronchitis.
Asthma(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 489
Triad of 1.intermittent and reversible airway obstruction2.chronic bronchial inflammation with eosinophils3.bronchial smooth muscle cell hypertrophy and hyperreactivity SEE SLIDE 13.7
Charcot-Leyden crystals. SEE SLIDE 13.5. (TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 492
Collections of crystalloids made up of eosinophil proteins.
Curschmann spirals. SEE SLIDE 13.5. (TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 492
Whorls of shed epithelium found in mucus plugs.
Asthma(TOPNOTCH)Robbins Basic Pathology, 9th Ed. p. 470
Thick, tenacious mucus plugs with Curshmann spirals and Charcot-Leyden crystals are found histologically in this disease. SEE SLIDE 13.5.
Bronchiectasis(TOPNOTCH)Robbins Basic Pathology, 9th Ed. p. 471
Permanent dilation of bronchi and bronchioles caused by destruction of the muscle and elastic supporting tissue, resulting from chronic necrotizing infections. There is intense acute and chronic inflammatory exudate within the walls, with mixed flora often cultured. There is also peribronchiolar fibrosis in chronic cases. SEE SLIDE 13.6.
Kartagener syndrome(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 493
An autosomal recessive disorder frequently associated with bronchiectasis and sterility in males.
Idiopathic Pulmonary Fibrosis(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 495
Refers to a pulmonary disorder of unknown etiology characterizedby patchy interstitial fibrosis, honeycomb lung, and fibroblastic foci (usual interstitial pneumonia pattern). Grossly, pleural surfaces of the lung have the appearance of cobblestones because of retraction scars along the interlobular septa. SEE SLIDE 13.8.
Saddle embolus(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 505
A thrombus that lodges astride a pulmonary artery bifurcation, which causes pulmonary hypertension, which can lead to hypoxia and cor pulmonale.
None, asymptomatic 60-80% of the time.(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 506
Most common symptom of pulmonary embolism.
Pulmonary hypertension(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 506
Mean pulmonary pressures reach one-fourth or more of systemic pressures.
Primary pulmonary hypertension(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 506
Encountered in young persons, more commonly in women, marked by fatigue, syncope, dyspnea on exertion, and sometimes chest pain. Cause of increased pulmonary pressures is unknown.
Secondary pulmonary hypertension(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 507
Clinical features of this disease reflect the underlying disease, with accentuation of respiratory insufficiency and right-sided heart strain.
Bronchopneumonia(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 509
Pneumonia with a patchy distribution of inflammation involving more than one lobe.
Congestion, red hepatization, gray hepatization, resolution(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 510
Four stages of pneumococcal pneumonia.
Atypical pneumonia. SEE SLIDE 13.11. (TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 513
Inflammatory reaction is largely confined within the walls of the alveoli. Septa widened and edematous, with mononuclear infiltrates of lymphocytes, histiocytes and plasma cells. Alveolar spaces are free of cellular exudate.
Lung abscess(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 515
A localized area of suppurative necrosis within the pulmonary parenchyma, resulting in the formation of one or more large cavities.
Right side since it’s shorter and more vertical. Specifically, in the posterior segment of the right upper lobe. (TOPNOTCH)Robbins Basic Pathology, 9th Ed. p. 492
Pulmonary abscess resulting from aspiration of infective material are much more common on the left or right side?
Primary tuberculosis(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 518
Form of tuberculosis that develops in a previously unexposed, unsensitized person.
Ghon focus(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 518
Implantation of the inhaled M. tuberculosis bacilli in the distal airspaces of the lungs, causes the formation of this 1 - 1.5 cm area of gray-white inflammatory consolidation. SEE SLIDE 13.22.
Ghon complex(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 518
Ghon focus + nodal involvement = ________
Ranke complex(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 518
Radiographically detectable calcified Ghon complex.
Secondary or reactivation TB(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 520
Pattern of disease that arises in previously sensitized host to M. tuberculosis.
Miliary TB(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 520
Occurs when TB bacilli drain through the lymphatics into lymphatic ducts, which eventually empty into the right side of the heart and into pulmonary circulation. Individual lesions are small, visible foci of yellow-white consolidation scattered through the parenchyma.
TB Lymphadenitis(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 521
The most frequent form of extrapulmonary TB.
Scrofula(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 521
TB lymphadenitis of the cervical LN.
Histoplasma capsulatum(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 523
Round to oval small yeast forms measuring 2-5 um in diameter. SEE SLIDE 13.9.
Coccidiodomycosis immitis. SEE SLIDE 13.10. (TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 523
Thick walled non-budding spherules 20-60 um diameter, often filled with small endospores.
Blastomycosis dermatitidis. SEE SLIDE 13.10. (TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 523
Round to oval and larger fungi, which reproduce by broad-based budding.
Cytomegalovirus (CMV)(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 524
Cells infected by this virus exhibit gigantism of the cell and nucleus. An enlarged intranuclear inclusion surrounded by a clear halo “owl’s eye” is seen. It is the most common opportunistic viral pathogen in AIDS.
Pneumocystis carinii pneumonia(TOPNOTCH)Robbins Basic Pathology, 9th Ed. p. 502
Opportunistic infection of the lungs having a characteristic intra-alveolar foamy, pink-staining exudate “cotton candy exudate”, with thickened septa and mononuclear infiltrate. When silver stain is used, tissue reveals round to cup-shaped cysts. SEE SLIDE 13.12.
Candida albicans(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 526
Most frequent disease-causing fungus.
Cryptococcus neoformans(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 527
The fungus is a 5-10 um yeast, has a thick, gelatinous capsule and reproduces by budding. Most likely acquired through bird droppings. Visualized by India ink or Giemsa stain. SEE SLIDE 13.13.
Small cell lung carcinomaIt is an aggressive tumor which usually have metastasized at the time of diagnosis.(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 529
Which type of lung cancer is treated by chemotherapy only? Why?
Non-small cell lung carcinoma(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 529
Lung carcinoma best treated with surgery since they respond poorly to chemotherapy.
Squamous cell carcinoma and Small-cell carcinoma(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 530
Types of lung cancer with strongest association with tobacco exposure.
Adenocarcinoma. SEE SLIDE 13.14. (TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 531
Lung cancer which are peripherally located, most common type of lung cancer in women and nonsmokers. Grows slowly and metastasize early. Assumes a variety of forms, incliding acinar, papillary and solid types.
Large-cell carcinoma(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 531
Lung carcinoma which typically have large, prominent nucleoli, and a moderate amount of cytoplasm, with minimal glandular or squamous differentiation.
Small cell lung carcinoma(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 532
Lung carcinoma which appear as pale gray, centrally located masses. Nests and cords of polygonal cells with scant cytoplasm, granular chromatin and inconspicuous nuclei. FNAB shows nuclear molding of adjacent cells. Associated with several paraneoplastic syndromes. SEE SLIDE 13.15.
Oat cell carcinoma(TOPNOTCH)Robbins Basic Pathology, 8th Ed. p. 532
Other name for small cell lung carcinoma.