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11th April 2024
A 21-year-old female presents to the emergency department with nausea, vomiting and amenorrhoea.
A 21-year-old female presents to the emergency department with nausea, vomiting and amenorrhoea. Her last period was 3 months ago. She has no past medical history and is not on regular medication. She has a single regular partner. On examination, her observations are normal, and her BMI is 24. Blood results are as follows:
| Thyroid-stimulating hormone (0.17-3.2 uU/l) | 4.9 |
| Free T4 (11-22 pmol/l)i | 15.5 |
| FSH (1-11 IU/l) | 0.8 |
| Oestradiol (72-1309 pmol/l) | 13000 |
| Prolactin 980 mU/l (<400 mU/l) | 980 |
Which of the following is the most likely underlying diagnosis?
Select the SINGLE most appropriate option from the list below. Select ONE option only.
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