A 60-year-old man in Spain presented with a severe, persistent headache and subtle behavioral changes, leading doctors to suspect a serious neurological condition, potentially brain cancer.
Initial Symptoms and Suspicions
The man’s headache began two weeks prior to seeking medical attention and was worsening. During a neurological examination, physicians noted a slight delay in his movements but no other significant deficits. Blood tests revealed elevated IgE levels, which can indicate immune responses associated with allergies, autoimmune diseases, or parasitic infections. A computed tomography (CT) scan of his head showed multiple lesions distributed throughout the brain, accompanied by swelling.
Cancer Workup Yields No Malignancy
Given the findings, doctors initially suspected metastatic cancer. The man was not immunocompromised and had no history of international travel. He received some relief from his headache after being treated with an anti-inflammatory corticosteroid. To investigate the suspected cancer, an extensive series of tests were conducted, including a whole-body contrast-enhanced CT scan, a colonoscopy, and a positron emission tomography/CT scan. However, these tests failed to reveal any signs of malignancy.
MRI Reveals Unexpected Diagnosis
A subsequent magnetic resonance imaging (MRI) scan, offering more detailed views of the brain lesions, provided a surprising revelation. The lesions were not tumors but rather encapsulated tapeworm larvae. The MRI clearly showed the scolexes, or heads, of the worms. Doctors were surprised by this diagnosis, as tapeworms are not considered endemic to Spain, and the patient reported no travel history.
Possible Exposure Route Identified
The medical team speculated that the man might have been exposed through his work. Until his retirement 10 years prior, he worked in construction, often alongside individuals who had migrated from regions where pork tapeworms (Taenia solium) are endemic. The parasitic worms can spread via the fecal-oral route. Doctors hypothesized that the infection could have resulted from a rare case of cryptic transmission, possibly through shared meals or bathrooms with a coworker who had a tapeworm infection.
Mitchell Landsberg is the senior reporter for News Raise and focuses on Technology. Mitchell regularly writes about social media platforms and how influencers, industry and general people use them to communicate and make money.
