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Tapeworms, Not Cancer, Found in Man’s Brain in Spain

A 60-year-old man in Spain who experienced worsening headaches and subtle behavioral changes was initially diagnosed with metastatic brain tumors. Doctors began treatment with steroids to manage swelling associated with cancer, which provided rapid symptom relief.

Initial Misdiagnosis and Further Testing

However, subsequent investigations failed to identify any primary cancer. An MRI scan ultimately revealed the true cause of his symptoms: cysts within his brain, identified as being from the pork tapeworm, *Taenia solium*.

Neurocysticercosis Diagnosis

The condition, known as neurocysticercosis, is a parasitic brain infection. While rare in developed nations, it is a significant cause of adult-onset seizures globally. The man had not traveled to regions where tapeworms are endemic, suggesting local exposure.

Researchers believe he may have contracted the parasite through contact on construction sites, where he shared food and bathroom facilities with migrant workers. This case points to an unusual instance of local transmission within Western Europe. Exposure to the tapeworm eggs could have occurred years prior to the diagnosis.

Treatment and Implications

The patient was treated with antiparasitic drugs and successfully weaned off steroids without any complications. The case, detailed in the journal *Emerging Infectious Diseases*, underscores the importance for medical professionals to consider brain infections from *T. solium* in their diagnostic evaluations, even in areas where cancer is statistically a more common diagnosis.