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http://news.bbc.co.uk/1/hi/world/europe/8000745.stmA five centimetre section of fir tree has been removed from a man's lung, Russian surgeons claim.
Doctors were investigating a suspected tumour in Artyom Sidorkin's lung, when they were surprised by a very different kind of trouble.
Surgeon Vladimir Kamashev said he was astonished, but botanist Olga Baranova was sceptical. Juliet Dunlop reports.