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Illuminations
Midline mystery
  1. Helen Williams
  1. Correspondence to Helen Williams, Radiology Department, Birmingham Children's Hospital, Steelhouse Lane, Birmingham, West Midlands B4 6NH, UK; helen.williams{at}bch.nhs.uk

http://dx.doi.org/10.1136/archdischild-2012-302212

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    Answers to the following two quiz questions can be found on page 239

    Theme: midline brain abnormalities

    For each of the following questions select one option from the following:

    1. Craniopharyngioma

    2. Septo-optic dysplasia

    3. Pituitary adenoma

    4. Posterior pituitary ectopia

    5. Germinoma

    6. Pituitary hypoplasia

    7. Hypothalamic hamartoma

    Question 1

    A 11-year-old girl presented with short stature and subsequent investigations revealed isolated growth hormone deficiency. A MRI scan was performed to look for any associated pituitary abnormalities. Figure 1 is a midline unenhanced, T1-weighted sagittal image of her brain. What does it show?

    Figure 1

    Question 2

    A 6-year-old boy underwent MRI scan as part of his investigation for rapidly progressing central precocious puberty. What is the diagnosis based on this midline unenhanced, T1-weighted sagittal image (figure …

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