Doctors in China removed two live parasitic worms, each about 10 centimeters long, from a woman's arm after she endured a year of unexplained pain and swelling. The parasites were still moving when surgeons pulled them out.
The woman, a resident of eastern China, had visited multiple hospitals over 12 months complaining of a painful, swollen left arm. Doctors initially treated her for inflammation and infection, but nothing worked. The source of her suffering remained hidden until a surgeon in Zhejiang province decided to open the tissue.
A moving mass under the skin
When the surgeon made an incision, he found two slender, white worms wriggling inside the woman's forearm. The creatures were identified as Spirometra tapeworm larvae, a parasite that causes a condition called sparganosis. Humans can become infected by drinking water contaminated with infected copepods, or by eating undercooked frog or snake meat. The worms can migrate through the body and survive for years.
The surgical team carefully extracted both worms whole. The woman's symptoms began to improve soon after the procedure. Doctors said that if the parasites had not been removed, they could have traveled to other parts of the body, including the brain, causing more serious damage.
Why locals took notice
News of the case spread quickly in China, where parasitic infections are rare but not unheard of. Many people in the region eat freshwater fish and amphibians, and public health officials occasionally warn about the risks of consuming raw or undercooked wildlife. The woman's long struggle before diagnosis highlighted how easily such infections can be missed, even by experienced doctors.
Local media reported the story as a cautionary tale. For residents, it was a vivid reminder that unusual, persistent pain can sometimes have a hidden cause. The case also sparked discussion about food safety and the importance of seeking specialized care when standard treatments fail.
A rare outcome with a clear message
The woman recovered fully after the worms were removed. Her case is now documented in medical literature as an example of sparganosis presenting in an unusual location. While such infections are uncommon, they are treatable when caught. The key, doctors said, is to consider parasites when symptoms do not respond to normal treatment. For the woman in eastern China, the answer was moving just beneath her skin all along.
