A woman who thought she was having an allergic reaction when her face swelled up was diagnosed with a one-in-a-million cancer.<br /><br />Melinda Nelson, 35, had just completed a triathlon when she started to notice her face was looking rounder and she was losing muscle from her legs.<br /><br />Her hands, feet and stomach swelled too and Melinda thought she could have been having an allergic reaction but her tests came back normal.<br /><br />Melinda went for a scan which revealed she had a 24cm tumour - the size of an American football - on her adrenal gland.<br /><br />It was secreting too much cortisol and causing Cushing's syndrome and Melinda's symptoms.
