What complication is associated with malignant otitis externa?

Malignant otitis externa is a serious condition that typically affects immunocompromised patients, particularly those with diabetes mellitus. The correct answer is osteomyelitis of the skull base, which is a complication associated with this condition.

The infection in malignant otitis externa can spread from the ear canal to the surrounding structures, including the skull base. This results in inflammation and infection of the temporal bone and may lead to osteomyelitis. This complication is particularly concerning because it signifies a more extensive infection that can have significant morbidity if not treated promptly and effectively.

Management of malignant otitis externa often requires aggressive antibiotic therapy and sometimes surgical intervention to address the underlying infection and prevent further complications such as cranial nerve involvement and abscess formation. The recognition of osteomyelitis as a complication is crucial for timely diagnosis and treatment.

The other options, while they can occur in different contexts of ear infections or other conditions, are not direct complications of malignant otitis externa in the way that osteomyelitis of the skull base is. This highlights the importance of understanding the specific risks and complications that arise from this serious infection.