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Malignant transformation of nasal polyp. Case report
1Department of Otorhinolaryngology, Tokyo Medical and Dental University, Japan.
Archives of Otolaryngology--Head & Neck Surgery
|March 1, 1988
Summary
Malignant transformation of nasal polyps is rare. This case study details a 49-year-old man with squamous cell carcinoma found on a nasal polyp, highlighting unusual clinical and histological findings.
Area of Science:
- Otolaryngology
- Pathology
Background:
- Nasal polyposis is a common condition.
- Malignant transformation within nasal polyps is considered exceedingly rare.
Observation:
- A 49-year-old male presented with nasal obstruction and a large right nasal polyp.
- Histological examination revealed squamous cell carcinoma with superficial microinvasion on the polyp surface.
- A separate, smaller polyp in the left nasal cavity also showed malignant transformation.
Findings:
- The carcinoma was confined to the polyp's surface, without stalk invasion.
- Concurrent malignant changes in two distinct nasal polyps were observed.
Implications:
- This case challenges the notion of rarity for nasal polyp malignancy.
- Highlights the importance of thorough histological evaluation of nasal polyps, even when seemingly benign.
- Suggests potential for multifocal malignant transformation in nasal polyps.