Frank Gaillard ◉ ◈

If you were to review the apparent diffusion coefficient (ADC) maps of the adjacent study, what values (measured in units x 10^-6 mm²/s) would you expect to encounter in the area of abnormality?

An elderly man presents with ataxia and headache. What is the most likely diagnosis?

A 30-year-old man, previously well, presents with ataxia and headache. What is the most likely diagnosis?

What is the approximate expected apparent diffusion coefficient (ADC; x 10^-6 mm²/s) of normal white matter?

What is the approximate expected apparent diffusion coefficient (ADC; x 10^-6 mm²/s) of the enhancing component of primary CNS lymphoma?

An elderly, otherwise well, individual presents with a headache and is investigated with an MRI. What is the most likely diagnosis?

In adults with herpes simplex encephalitis, what is the most common pattern of cerebral involvement?

Which of the following features is helpful in distinguishing herpes simplex encephalitis from middle cerebral artery infarction?

Pituitary adenomas are most likely...

Secretory (hormone producing) pituitary macroadenomas are most likely to secrete... 

The secretion of which anterior pituitary hormone is tonically inhibited by a hypothalamic hormone?

Prolactin inhibitory hormone released by the hypothalamus is actually...

Which of the following hormones is secreted by the posterior lobe of the pituitary gland?

Pituitary macroadenomas are most likely to cause which of the following visual field defect?

Which of the following antibodies is most commonly associated with autoimmune encephalitis?

Which tumor is the most common underlying cause of patients with autoimmune encephalitis?

As a general rule, patients with antibodies causing autoimmune encephalitis (limbic encephalitis) which target intracellular antigens are more likely to...

A 55-year-old woman, previously well, presents with 4-month history of rapid decline in cognitive function. She is imaged with an MRI.  What is the most likely diagnosis?

Gliomatosis cerebri growth pattern is defined as diffuse involvement how many lobes of the brain? 

In the 2016 (revised 4th edition) of the WHO classification of CNS tumors, gliomatosis cerebri growth pattern was most considered to most commonly occur in...