Interpretation of serum total thyroxine concentration in patients with abnormal thyroxine-binding proteins.

Loctite) was applied to the end of a rigid 5-mm OD plastic tube, which was then rapidly passed down the Roberts pharyngoscope and pressed firmly on to the stone, meanwhile applying countertraction with the inflated Foley catheter, which had been re-introduced.The stone was then extracted by withdrawing plastic rod, catheter, and pharyngoscope as one (see figure).The patient made a rapid uneventful recovery without oesophageal perforation.