Nasal Cavity Hyperplastic and Neoplastic - Pathology

Nasal cavity carcinoma (Image sourced from Bristol Biomed Image Archive with permission)

Nasal neoplasia in general

• Majority are malignant, locally invasive but do not metastasise
• Usually pale, soft, fleshy or friable
• May be osteoma or osteosarcoma, chondroma or chondrosarcoma, fibroma or fibrosarcoma, myxoma or myxosarcoma, haemangioma or haemangiosarcoma, adenoma or adenocarcinoma

Olfactory Neuroblastoma

Ethmoturbinate Tumours

Nasal polyps

• Polypoid thickening of the inflamed nasal musosa, hyperplastic epithelium
• Pinkish, often pedunculated masses, round, often large and multiple proturberences into the nasal meatus
• Can arise subsequently to chronic inflammation
• Old polyps may becoma fibrous
• May recur when excised
• Necessary to distinguish from neoplasia
• Common in cats, less often in dogs, also horses and sheep
• Also see Progressive haematoma of horses and Nasopharyngeal polyps of cats

Nasal and paranasal sinus cysts

• Mimic infection or neoplasms
• Expand and destroy surrounding tissue
• Epithelial capsule with haemorrhagic or yellow fluid
• Do not tend to recur after surgery

Test yourself with the Nasal Cavity Pathology Flashcards

Nasal Cavity Pathology Flashcards