I think blobby should stop watching re-runs of the X-files and return to his 'just in case nuclear bunker' in his mum's back garden.

This is also my first comment, motivated singularly by our helpful American friend Angeline. I have never heard such ridiculous ramblings. Her GP likely knows this is a non complicated lymphatic swelling. Non painfull single extremity swellings are nearly always self resolving and require regular ambulation +/- massage. The end.