Description
A middle-aged patient with a previous history of chronic sinusitis and arterial hypertension was admitted because of altered mental status. Two days earlier, symptoms such as fever, chills, nasal obstruction and headache slowly developed. On examination, the patient was febrile and with stiff neck. The remainder of the physical examination was normal. CT scan (figure 1A,B) and T1-MRI (figure 2A–C) were both performed; besides signs of sinusitis, a 2 cm right periatrial expansive lesion surrounded by vasogenic oedema was found being compatible with brain abscess. A thorough investigation was done to exclude infectious endocarditis, including echocardiography and blood cultures which were all negative. Viral serologies, including HIV, were negative. Based on the brain lesion characteristics (size and peculiar location), a conservative approach with broad-spectrum antibiotics (ceftriaxone, metronidazole and vancomycin) was initially suggested by Neurosurgery. However, 20 days after, the patient presented with neurological deterioration....
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