Whilst uncommon in pregnancy, hypercalcaemia can lead to significant maternal and fetal morbidity. An important complication of hypercalcaemia is uncontrolled hypertension. This case outlines an example of refractory hypercalcaemia exacerbating an emerging hypertensive crisis. The proposed aetiology was parathyroid hormone-related protein (PTHrP)-mediated hypercalcaemia secondary to a necrotic uterine fibroid. We highlight how effective and prompt involvement of the Maternal Medicine Network and multidisciplinary team led to a successful pregnancy outcome.
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