title: Spontaneous neoplasms of the marmoset (Callithrix jacchus). Oral and nasopharyngeal squamous cell carcinomas.
abstract: Eight spontaneous highly invasive oral and nasopharyngeal squamous cell carcinomas were observed over an 18-month period in a breeding colony of the common marmoset (Callithrix jacchus). Affected marmosets were predominantly males over four years of age. The incidence of this tumor in the four-year-plus age group was 4.9%. The tumors were locally invasive through the palate to the nasal cavity, retrobulbar space and cranial cavity in some marmosets with lung metastases present in three cases.
mesh_terms: D000818:Animals; D002144:Callithrix; D002143:Callitrichinae; D002294:Carcinoma, Squamous Cell / Q000473:pathology / Q000662:veterinary*; D005260:Female; D008175:Lung Neoplasms / Q000556:secondary / Q000662:veterinary; D008297:Male; D008992:Monkey Diseases / Q000473:pathology*; D009062:Mouth Neoplasms / Q000473:pathology / Q000662:veterinary*; D009303:Nasopharyngeal Neoplasms / Q000473:pathology / Q000662:veterinary*; D009361:Neoplasm Invasiveness; D009360:Neoplastic Cells, Circulating; D010157:Palatal Neoplasms / Q000473:pathology / Q000662:veterinary