A 64-year-old Asian lady has recently been diagnosed with osteomalacia.
A 64-year-old Asian lady has recently been diagnosed with osteomalacia. She is experiencing generalised bone pain and muscle weakness. Below are her blood tests:
| Sodium | 135 mmol/L (135 – 145 mmol/L) |
| Potassium | 2.9 mmol/L (3.5-5.3 mmol/L) |
| Adjusted Calcium | 2.10 mmol/L (2.1 – 2.6 mmol/L) |
| Vitamin D | 11 nmol/L (>50nmol/L) |
| ALP | 124 iU/L (30 – 130 iU/L) |
| ALT | 22 iU/L (3-40 iU/L) |
| Phosphate | 0.6 mmol/L (0.8 – 1.4 mmol/L) |
| Bicarbonate | 17 mmol/L (22-29 mmol/L) |
| pH | 7.30 (7.35 – 7.45) |
| Urinary pH | 4.0 |
| Chloride | 130 mmol/L (95-105 mmol/L) |
| eGFR | 75 |
What is the most likely underlying cause of her osteomalacia?
Select the SINGLE most appropriate option from the list below. Select ONE option only.
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