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Published on: August 15, 2025
Congenital cholesteatoma of the infratemporal fossa
1Department of Otolaryngology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Insights
This case report details an extremely rare congenital cholesteatoma originating in the infratemporal fossa. The diagnosis was confirmed through clinical, radiological, and surgical evaluation in a young patient.
Area of Science:
- Otolaryngology
- Pediatric Surgery
- Medical Imaging
Background:
- Congenital cholesteatoma is a rare condition, often presenting with non-specific symptoms.
- The infratemporal fossa is an unusual location for this pathology.
Observation:
- A five-year-old girl presented with left ear symptoms suggestive of middle ear effusion.
- An enlarging mass was noted in the tympanic membrane, prompting further investigation.
- Radiological imaging revealed a mass primarily in the infratemporal fossa with minor tympanic cavity extension.
Findings:
- Clinical presentation, imaging, and intraoperative findings confirmed a congenital cholesteatoma.
- The infratemporal fossa was identified as the primary site of origin.
- Surgical intervention was performed with confirmation of the diagnosis.
Implications:
- Highlights the importance of considering congenital cholesteatoma in pediatric patients with ear masses, even in rare locations.
- Emphasizes the role of advanced imaging in diagnosing and localizing such rare congenital anomalies.
- Contributes to the understanding of the differential diagnosis for infratemporal fossa masses in children.
Objective:
We report an extremely rare case of congenital cholesteatoma of the infratemporal fossa.
Method:
The clinical, radiological and intra-operative findings of the patient are presented.
Results:
A five-year-old girl presented to our hospital with symptoms in the left ear consistent with middle-ear effusion. A congenital cholesteatoma was not suspected until an enlarging mass in the anteroinferior quadrant of the tympanic membrane was observed. Radiological studies revealed that the mass was located largely in the infratemporal fossa, with limited extension into the tympanic cavity. The patient underwent surgical treatment, which confirmed the clinical and radiological findings.
Conclusion:
This patient's clinical, radiological and intra-operative findings strongly suggested the infratemporal fossa as the site of origin of her congenital cholesteatoma.

