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Rhinosporidiosis:
Rhinosporidiosis:
Caused by Rhinosporidium seeberi, traditionally thought to be a fungus but actually an aquatic protistan parasite. Natural aquatic habitat, transmitted through traumatized epithelium, most commonly involves the nose and eye, can also be seen involving the skin, ear, genitals and rectum.
Gross:
Gross:
Commonly seen in upper respiratory tract mainly in the nasal mucosa in the form of nasal polyp.
Microscopy:
Microscopy:
Rhinosporidiosis.png1. Polypoidal lesion lined by pseudostratified ciliated columnar epithelium
2. Number of mature and immature spherical sporangia containing small basophilic round sporangiospores
3. Inflammatory infiltrate show lymphocytes, plasma cells, and neutrophils in the sub epithelial layer.
Diagnosis
Diagnosis
Rhinosporidiosis
Key Questions & Answers
Key Questions & Answers
1. What is the causative organism?
The causative organism is Rhinosporidium seeberi
2. What is the mode of infection?
The mode of infection is bathing or working exposure to stagnant water
3. Mention the commonly affected sites.
Nasal cavity, nasopharynx, palate, conjunctivae, larynx, genitalia, rectum and skin.
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