A 28-year-old woman presented to the emergency department with a 3-day history of abdominal pain. Her past medical history included intermenstrual bleeding, and she was undergoing 6-monthly renal ultrasound surveillance for a cystic lesion.
Investigations:
serum creatinine84 µmol/L (60C110)
serum corrected calcium3.20 mmol/L (2.20C2.60)
serum phosphate0.7 mmol/L (0.8C1.4)
plasma parathyroid hormone19.5 pmol/L (0.9C5.4)
What is the most likely condition underlying the clinical presentation?
A . Cowden’s syndrome
B . hyperparathyroidismCjaw tumour syndrome
C . multiple endocrine neoplasia type 1
D . multiple endocrine neoplasia type 2B
E . von HippelCLindau syndrome
Answer: B