Related Experiment Videos
Primary inverted papilloma of the middle ear and mastoid
Cosimo de Filippis1, Gino Marioni, Alberto Tregnaghi
1Department of Otolaryngology-Head and Neck Surgery, Institute of Radiology, University of Padua, Via Giustiniani 2, Padua, Italy.
Objective:
Inverted papilloma (Schneiderian-type papilloma), involving the middle ear and mastoid as a primary lesion or as an extension of a sinonasal papilloma, is an extremely rare occurrence.
Study Design:
The study design was a case report format with a review of the literature. Epidemiologic, diagnostic, therapeutic and follow-up problems are discussed.
Setting:
Academic, tertiary referral hospital.
Patient And Methods:
The patient underwent Wullstein type I tympanoplasty and complete mastoidectomy, revealing obliteration of the pneumatic cells by polypoid tissue. The middle ear was completely filled by polypoid tissue. Histopathologic examination revealed an inverted papilloma of the middle ear and mastoid.
Conclusion:
Literature reports indicate that inverted papillomas of the middle ear and mastoid differ pathogenically and epidemiologically from sinonasal inverted papillomas. Recurrence rates and association with squamous cell carcinoma are higher in Schneiderian-type papillomas of the middle ear than in inverted papillomas of the nose and paranasal sinuses. Long-term follow-up after removal of inverted papilloma of the middle ear and mastoid is mandatory. Magnetic resonance imaging is the first follow-up examination to perform.
Insights
Inverted papilloma in the middle ear and mastoid is rare and differs from sinonasal types. These tumors have higher recurrence and cancer risks, requiring long-term MRI follow-up.
Area of Science:
- Otolaryngology
- Pathology
- Oncology
Background:
- Inverted papilloma (IP), a rare tumor, can involve the middle ear and mastoid, either primarily or as an extension from sinonasal regions.
- Schneiderian-type papillomas in the middle ear present unique challenges due to their rarity and distinct characteristics.
Observation:
- A case report details a patient with inverted papilloma of the middle ear and mastoid, treated with tympanoplasty and mastoidectomy.
- Histopathology confirmed the diagnosis of inverted papilloma within the middle ear and mastoid structures.
Findings:
- Middle ear inverted papillomas exhibit different pathogenic and epidemiologic profiles compared to sinonasal IPs.
- Schneiderian-type papillomas of the middle ear demonstrate higher recurrence rates and a greater association with squamous cell carcinoma than their sinonasal counterparts.
Implications:
- Long-term surveillance is crucial for patients with middle ear and mastoid inverted papillomas.
- Magnetic resonance imaging (MRI) is recommended as the primary follow-up examination for monitoring disease recurrence.