A 25-year-old male presents with sudden onset dyspnea and pleuritic chest pain. A chest X-ray is performed. Visualization of which specific line, representing the edge of the collapsed lung, confirms a pneumothorax?
Anonymous Quiz
31%
Parietal pleural line
31%
Kerley B line
8%
Mediastinal line
31%
Visceral pleural line
Maxemo EMREE 26-27
A 25-year-old male presents with sudden onset dyspnea and pleuritic chest pain. A chest X-ray is performed. Visualization of which specific line, representing the edge of the collapsed lung, confirms a pneumothorax?
💡 EXPLANATION:
A definitive diagnosis of pneumothorax on CXR is made by identifying the visceral pleural line. This thin white line represents the lung edge, separated from the chest wall by a radiolucent space devoid of lung markings (air).
A 45 y/o M presents with chronic sinusitis, nasal crusting, hemoptysis, and hematuria. Urinalysis shows RBC casts. Serum creatinine is elevated. Which diagnosis is most likely?
Anonymous Quiz
47%
Goodpasture syndrome
7%
Microscopic polyangiitis
27%
Granulomatosis with polyangiitis
20%
Churg-Strauss syndrome
Maxemo EMREE 26-27
A 45 y/o M presents with chronic sinusitis, nasal crusting, hemoptysis, and hematuria. Urinalysis shows RBC casts. Serum creatinine is elevated. Which diagnosis is most likely?
💡 EXPLANATION:
Granulomatosis with Polyangiitis (GPA/Wegener's) is defined by the triad of upper airway (sinusitis), lower airway (hemoptysis), and renal disease (glomerulonephritis). c-ANCA is typically positive. Goodpasture syndrome spares the upper airway.
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A patient presents with fever and cough. CXR demonstrates a dense opacity in the right lower zone that obscures the right heart border. What is the primary radiographic abnormality?
Anonymous Quiz
0%
Pleural effusion
86%
Lobar consolidation
14%
Pneumothorax
0%
Pulmonary edema
Maxemo EMREE 26-27
A patient presents with fever and cough. CXR demonstrates a dense opacity in the right lower zone that obscures the right heart border. What is the primary radiographic abnormality?
💡 EXPLANATION:
The finding of an opacity obscuring the heart border (positive Silhouette sign) is characteristic of lobar consolidation (pneumonia). This represents alveolar filling with fluid/pus. Pleural effusions typically show a meniscus, while pneumothorax appears hyperlucent.
A 32y F non-smoker presents with recurrent spontaneous pneumothorax. HRCT chest reveals diffuse, uniformly distributed thin-walled cysts. What is the most likely diagnosis?
Anonymous Quiz
29%
Pulmonary Langerhans cell histiocytosis
47%
Lymphangioleiomyomatosis
12%
Birt-Hogg-Dubé syndrome
12%
Lymphoid interstitial pneumonia
Maxemo EMREE 26-27
A 32y F non-smoker presents with recurrent spontaneous pneumothorax. HRCT chest reveals diffuse, uniformly distributed thin-walled cysts. What is the most likely diagnosis?
💡 EXPLANATION:
Lymphangioleiomyomatosis (LAM) affects women of childbearing age, presenting with recurrent pneumothorax and diffuse thin-walled cysts on HRCT. PLCH is associated with smoking and irregular cysts. Birt-Hogg-Dubé cysts are typically basal/subpleural.
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A patient presents with fever and cough. CXR demonstrates a dense opacity in the right lower zone that obscures the right heart border. What is the primary radiographic abnormality?
Anonymous Quiz
7%
Pleural effusion
67%
Lobar consolidation
20%
Pneumothorax
7%
Pulmonary edema
❤1
Maxemo EMREE 26-27
A patient presents with fever and cough. CXR demonstrates a dense opacity in the right lower zone that obscures the right heart border. What is the primary radiographic abnormality?
💡 EXPLANATION:
The finding of an opacity obscuring the heart border (positive Silhouette sign) is characteristic of lobar consolidation (pneumonia). This represents alveolar filling with fluid/pus. Pleural effusions typically show a meniscus, while pneumothorax appears hyperlucent.
A 32y F non-smoker presents with recurrent spontaneous pneumothorax. HRCT chest reveals diffuse, uniformly distributed thin-walled cysts. What is the most likely diagnosis?
Anonymous Quiz
21%
Pulmonary Langerhans cell histiocytosis
57%
Lymphangioleiomyomatosis
14%
Birt-Hogg-Dubé syndrome
7%
Lymphoid interstitial pneumonia
Maxemo EMREE 26-27
A 32y F non-smoker presents with recurrent spontaneous pneumothorax. HRCT chest reveals diffuse, uniformly distributed thin-walled cysts. What is the most likely diagnosis?
💡 EXPLANATION:
Lymphangioleiomyomatosis (LAM) affects women of childbearing age, presenting with recurrent pneumothorax and diffuse thin-walled cysts on HRCT. PLCH is associated with smoking and irregular cysts. Birt-Hogg-Dubé cysts are typically basal/subpleural.
A 45M with a devastating anoxic brain injury is evaluated for brain death. He has no cranial nerve reflexes and is apneic. His leg flexes slightly when his foot is stimulated. What is the most likely explanation for his leg movement?
Anonymous Quiz
29%
Incomplete Brainstem Death
0%
Malingering
71%
Spinal Reflex
0%
Locked-in Syndrome
Maxemo EMREE 26-27
A 45M with a devastating anoxic brain injury is evaluated for brain death. He has no cranial nerve reflexes and is apneic. His leg flexes slightly when his foot is stimulated. What is the most likely explanation for his leg movement?
💡 EXPLANATION:
Spinal reflexes (like the triple flexion reflex) are mediated by the spinal cord and can persist even with complete and irreversible loss of all brain and brainstem function. Their presence does not preclude the diagnosis of brain death.
What is the classic clinical triad for Susac syndrome?
Anonymous Quiz
25%
Encephalopathy, branch retinal artery occlusion, sensorineural hearing loss
25%
Nystagmus, intention tremor, scanning speech
0%
Hypertension, bradycardia, irregular respirations
50%
Hypotension, muffled heart sounds, jugular venous distention