J 11 Mi 86. Ring enhancing frontotemporal

Q: A female presents with symptoms and signs suggestive of meningitis. MRI scan reveals a ring enhancing lesion in the frontotemporal region, while CSF shows gram positive bacilli. Other findings are minimally abnormal. Which of the following organism is the most likely etiological agent:

(a) Listeria monocytogenes.
(b) Hemophilus influenza
(c) Pneumococcus
(d) Staphylococcus aureus.



                                                                                                   A: a. Listeria...