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25th July 2023
A 58-year-old Caucasian man with Crohn’s disease presents to her GP.
A 58-year-old Caucasian man with Crohn’s disease presents to her GP. He is experiencing generalised bone pain and feels weak. His family have noticed that he has difficulty getting out of the chair and developed a waddling gait.
| Sodium | 136 mmol/L (115-160 g/L) |
| Potassium | 4.8 mmol/L (3.5-5.3mmol/L) |
| eGFR | 89 |
| Adjusted Calcium | 2.20 mmol/L (2.1-2.6 mmol/L) |
| Phosphate | 0.8 mmol/L (0.8-1.4 mmol/L) |
| Vitamin D | 13 nmol/L (>50 nmol/L) |
| ALP | 126 iU/L (30-130 iU/L) |
Following the above blood tests, the patient was diagnosed with osteomalacia.
What is the most likely cause of her osteomalacia?
Select the SINGLE most appropriate option from the list below. Select ONE option only.
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