A 65-year-old man living in France who received a kidney transplant developed a serious fungal infection caused by Emergomyces europaeus, a rare fungus that initially appeared to be tuberculosis. Doctors used advanced genetic testing to identify the unusual fungus in samples from his lungs and bone marrow. The patient was treated with a combination of antifungal medications, which successfully cleared the infection. This is the first time this particular fungal infection has been documented in France and highlights how emerging infections can mimic more common diseases.