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[Brain abscess as a complication of ear malignancy: a case report]
1Department of Otolaryngology, Chang Gung Memorial Hospital, Kaohsiung, Taiwan, R.O.C.
Abstract:
Ear infection is the most common cause of brain abscess. A suppurative process in the ear has access to the central nervous system by direct extension or through preformed pathways, either developmental, traumatic or pathologic, or by retrograde spread along the thromobophlebitic vein. Squamous cell carcinoma of middle ear or mastoid cavity is a rare disease and often associated with chronic otitis or chronic draining ear. Ear malignancy easily produces the destruction of temporal bone which may serve as a route for coexistent infection spreading into the brain. This paper reports a case of brain abscess occurring in a patient with temporal bone cancer. To the best of our knowledge, no more than three similar cases have been reported in the literature. The authors suggest that if an otogenic brain abscess is concomitant with infection and granulomatous mass in the ear, biopsy should be performed to rule out malignancy.
Insights
Brain abscesses commonly stem from ear infections. In rare cases, temporal bone cancer can also lead to brain abscess, necessitating biopsy to rule out malignancy in such scenarios.
Area of Science:
- Neurology
- Otolaryngology
- Oncology
Background:
- Ear infections are the primary cause of brain abscesses, often spreading via direct extension or preformed pathways to the central nervous system.
- Squamous cell carcinoma of the middle ear/mastoid is rare, frequently linked to chronic otitis or ear discharge.
- Temporal bone cancer can destroy bone, creating a pathway for infection to spread to the brain.
Observation:
- This paper details a rare case of brain abscess in a patient with concurrent temporal bone cancer.
- Fewer than four similar cases have been documented in medical literature.
- The observed patient presented with both a brain abscess and signs of infection/granulomatous mass in the ear.
Findings:
- The study highlights the unusual co-occurrence of otogenic brain abscess and temporal bone malignancy.
- Temporal bone cancer can serve as a critical route for central nervous system infection.
- Diagnostic challenges exist in differentiating infectious from malignant processes in the ear.
Implications:
- Biopsy is recommended for otogenic brain abscesses with coexisting ear infection and granulomatous mass to exclude malignancy.
- Early detection of underlying malignancy is crucial for effective treatment of brain abscess in such complex cases.
- This case underscores the importance of considering rare etiologies in complex neurological presentations originating from the ear.