MS-1674

Samantha is a 55-year-old woman who has presented to her doctor with a persistent pain in her neck over the past 6 months. She has also noticed a lump on the anterolateral aspect of her neck and has been experiencing a persistent cough. Upon conducting blood tests, her doctor has found that she has hypocalcaemia and hypophosphataemia. Following an ultrasound and biopsy, Samantha has been diagnosed with medullary thyroid carcinoma. The tumour studies have shown that there has been no spread to local lymph nodes. Can you explain the reason for Samantha’s abnormal blood results?