A 50-year-old female presents with a history
of diarrhoea. The diarrhoea is associated with bloating and passage of a lot
of wind. She has a long-standing history of Raynaudís phenomenon.
On examination you note that she has a beak
like nose, a small mouth with perioral puckering of the skin (pseudorhagades).
On examination of her hands you note sclerodacyly and nail fold capillary
In this patient which of the following
investigations is likely to reveal the diagnosis?
Distal duodenal biopsy
Small bowel follow through
Glycocholic acid breath test