Doctors suspected man had brain cancer. He actually had worms.

His doctors went looking for cancer, then they saw the worms' heads.
https://arstechnica.com/health/2026/06/doctors-suspected-man-had-brain-cancer-he-actually-had-worms/?utm_brand=arstechnica&utm_social-type=owned&utm_source=mastodon&utm_medium=social