Q:

A 60 year old man with a 4 years history of thirst, urinary frequency and weight loss presents with a deep painless ulcer on the heel. What is the most appropriate investigation?

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A 60 year old man with a 4 years history of thirst, urinary frequency and weight loss presents with a deep painless ulcer on the heel. What is the most appropriate investigation?


  1. Ateriography
  2. Venography
  3. Blood sugar
  4. Biopsy for malignant melanoma
  5. Biopsy for pyoderma

All Answers

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The key is C. Blood sugar. [The patient probably developed diabetic foot].

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