In the setting of progressive massive fibrosis pattern on CT, which of the following would most strongly favor sarcoidosis over silicosis as the underlying cause? 

Inferior displacement of the medial head of the clavicle on the serendipity view (axial) of the sternoclavicular joints is indicative of a sternoclavicular joint dislocation in what direction?

Which of the following is a causative agent of hydatid disease?

Which of the following is the causative agent of Chagas disease?

Which of the following is the causative agent of cysticercosis?

Which of the following is the most common causative agent of filariasis?

Which statement is true of pulmonary infarct?

Alpha-1-antitrypsin is produced in the...

Which of the following differentiates a pseudochylothorax from a chylothorax?

Which site is typically less frequently involved by lymphadenopathy in abdominal tuberculosis?

Which of the following is NOT a helpful indicator of infection as the underlying cause of a pulmonary cavity? 

Obliterative bronchiolitis is a submucosal and peribronchiolar fibrotic process resulting in air trapping. Which of the following is NOT a cause of obliterative bronchiolitis?    

Which pattern of lung cysts on CT would be expected in Birt-Hogg-Dubé syndrome (folliculin gene-associated syndrome)?

Which lung segment is this?

Axial HRCT image of the chest in a 60-year-old female non-smoker with shortness of breath and a dry cough for several years. Which is the most likely diagnosis? 

What is the most characteristic feature of cancers that may lead to "length time" bias?

A 25 year old female presents with enlarged cervical lymph nodes, subsequent CT confirmed calcified cervical lymphadenopathy as well as bilateral adrenal masses. What is the most likely underlying condition?

What is the most common cause of constrictive pericarditis?

Which of the following lung cancers is NOT associated with cigarette smoking?

A 7-year-old boy is brought to the A&E department with a cough and shortness of breath. There has been some history of fever, but no systemic upset. The chest radiograph reveals an ovoid opacity in the right mid-zone. The edges of the lesion are well defined. There are no air bronchograms. What is the most likely diagnosis?