Questions

Lumbar radiographs in a 65-year-old male with lower back pain reveal an indistinct margin of the superior endplate of L4. Which of the following is most likely to account for this?

An accentuated vertical trabecular pattern within a single lumbar vertebral body is most indicative of which pathology?

Which other spondyloarthritis is radiographically indistinguishable from ankylosing spondylitis?

What is the primary mode of transmission of Cryptococcus leading to pulmonary infection?

What type of cancer screening bias may result from a cancer that slowly reaches the "critical point", i.e., the point at which it becomes difficult to cure?

What type of cancer screening bias may result from a cancer that never reaches the "critical point", i.e., the point at which it becomes difficult to cure?

What is the best definition of the "critical point" in the spread of cancer?

What type of cancer screening bias may result from a cancer that reaches the "critical point" (the point at which the cancer becomes difficult to cure) before it can be detected by screening?

What type of cancer screening bias(es) result(s) in overestimation of the benefits of screening?

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

What study randomized >50,000 subjects into low-dose CT and chest x-ray screening groups and found a 20% reduction in lung cancer mortality in subjects screened with low-dose CT compared to chest x-ray screening?

Which of the following statements about tuberculous meningitis is correct? Tuberculous meningitis…

In the assessment of post-esophagectomy anastomotic leak on oral contrast CT of the thorax, if there is no oral contrast leak and no mediastinal free gas, what is the likelihood there is an anastomotic leak?

Leptomeningeal disease is more suggestive of which of the following pathologies?

A preterm neonate has been treated in the neonatal ICU since birth and is now 10 days old. They are intubated and ventilated, and while there was an initial good response to surfactant treatment, their oxygen requirement has increased over the last 12 hours.

A chest x-ray is performed and demonstrates linear lucency extending from the hila towards the periphery of the film. What is the likely diagnosis?

A 60-year-old woman with a 50 pack-year history of smoking presents with a cough. Based on the history and the chest x-ray findings, what is the most likely type of and reason for the right upper lobe atelectasis?

In which clinical scenario would a ventilation perfusion scan (VQ scan) be preferable to a CTPA (CT pulmonary angiogram) for assessment of potential pulmonary embolism?

Which of the following radiopharmaceuticals is used for the perfusion phase of a nuclear medicine ventilation perfusion scan (VQ scan)?

Which of the following investigations is most appropriate for a clinically unstable patient with suspected acute pulmonary embolism?

Which of the following statements about Kartagener syndrome is true?