QuestionSBA
QuestionChoice
No, this is not the correct answer. Vitamin B12 deficiency is associated with macrocytic anaemia. By contrast, this patient demonstrates evidence of Rickets.
10007927
c
Vitamin B12 deficiency
QuestionChoice
No, this is not the correct answer. This is likely to cause symptoms of scurvy such as fatigue, joint swelling and swollen gums. By contrast, this patient demonstrates evidence of Rickets.
10007926
b
Vitamin C deficiency
QuestionChoice
Yes, this is the correct answer. The patient is demonstrating bowed legs and bone pain, characteristic of Rickets in children. This is caused by a vitamin D deficiency, which in turn reduces the production of calcitriol (activated vitamin D3). Hence there is reduced absorption of calcium and phosphate from the gastrointestinal tract, which is required for adequate mineralisation of bone.
10007925
a
Vitamin D deficiency
QuestionChoice
No this is not the single best answer. As this patient is deficient in vitamin D, there is less absorption of calcium and phosphate from the gastrointestinal tract, causing poor mineralisation of bone. However, as the majority of calcium is obtained through sunlight rather than dietary sources, low calcium levels are typically secondary to a vitamin D deficiency. Vitamin D deficiency is therefore a more accurate answer.
10007928
d
Calcium deficiency
QuestionChoice
No, this is not the correct answer. This patient demonstrates evidence of Rickets, commonly caused by a vitamin D deficiency.
10007929
e
Iodine defiency
Concept
Chapter
2693
4632
Osteomalacia
Topic
154
Musculoskeletal physiology and disease
14132
A 5-year-old boy presents to the paediatric clinic. His parents are concerned about his short stature, and wonder if his bones are growing correctly. On examination, there is evidence of "bowed" legs and an antalgic gait.

Which of the following dietary deficiencies may account for this presentation?
a