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Malakoplakia of the maxillary sinus.
The Annals of Otology, Rhinology, and Laryngology
|March 1, 1985
Summary
This study reports the first nasal cavity malakoplakia case in a 21-year-old man. Histiocyte accumulations with characteristic granules were observed, offering insights into this rare condition.
Area of Science:
- Pathology
- Otolaryngology
- Microbiology
Background:
- Malakoplakia is a rare chronic inflammatory condition.
- Typically affects the genitourinary tract, but can occur in other sites.
- Nasal cavity involvement is exceptionally rare.
Observation:
- A polypoid formation was found in the left maxillary sinus of a 21-year-old male patient.
- Microscopic examination revealed pseudostratified epithelium surrounding myxoid tissue.
- Histiocyte accumulations with concentric, multilayered granules were a key feature.
Findings:
- Electron microscopy identified phagolysosomes, intermediate bodies, and Michaelis-Gutmann bodies within histiocyte cytoplasm.
- Septate junctions between lysosomes were frequently observed.
- These ultrastructural findings are characteristic of malakoplakia.
Implications:
- This case expands the known anatomical distribution of malakoplakia.
- Understanding the ultrastructural features aids in diagnosing this rare nasal condition.
- Further research into the etiopathogenesis of nasal malakoplakia is warranted.