A 64-year-old Asian lady has recently been diagnosed with osteomalacia. | Medibuddy
25th July 2023

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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