英国一华人在08年开始感觉频繁头痛，闻到异味。看医生后做MRI发现他的大脑内有一条绦虫。这个绦虫还自由自在地在脑子里到处乱跑。直到2012年才手术拿了出来。这个绦虫没有嘴巴，推测是通过身体皮肤吸收营养。可能是他回中国期间曾用生青蛙肉敷在眼睛上治疗眼疾导致的。
链接:
http://metro.co.uk/2014/11/21/headache-rare-parasitic-worm-lived-in-mans-brain-for-four-years-4956667/
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But four years later the 1cm-long worm was finally found after scientists at St Thomas’ Hospital in London took a biopsy of his brain.
By the time surgeons were able to extract the parasite, the worm had travelled 5cm to the right side of his brain. Eggs from the parasite had also feasted on his brain matter.
The tiny tapeworm, Spirometra erinaceieuropaei, was identified by a team of scientists led by Dr Hayley Bennett, from the Wellcome Trust Sanger Institute, which mapped its genome.
It has only been reported 300 times in the last 60 years, the scientists said. It is rare but most commonly found in South East Asia, China and Japan.
The rare worm was of a type never before found in the UK but it is believed that it can be caught by eating infected food or via a Chinese medical remedy for sore eyes that includes raw frog.
As well as the Chinese medicine risk, it is also believed to be transmitted by eating infected crustaceans from lakes or eating raw meat from reptiles and amphibians, they said.
......因为太罕见，英国医生把绦虫基因测序了。发现这个绦虫DNA是普通绦虫的10倍，接近人的1/3。只出现在东南亚。靠通过皮肤吸收大脑的脂肪酸为生。因此还发了篇论文。The genome of the sparganosis tapeworm Spirometra erinaceieuropaei isolated from the biopsy of a migrating brain lesion
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