A 67-year-old female presents with a swollen right leg.
She gives a history of weight loss and also says she has had a rash over her
On examination you note that her right calf is swollen,
erythematous, warm, tense and tender. Over her buttocks you note an
erythematous necrolytic rash.
Hb 8.9 g/dL
WBC 11 x109 /L
Glucose 14 mmol/L
In this patient which one of the following investigations
is most likely to show the primary lesion?
Gastroscopy and distal duodenal biopsy
Colonoscopy and terminal ileal biopsy
Barium follow through
White cell scan