Eyelid neoplasms of dogs.
A survey of 202 canine eyelid neoplasms was conducted to identify the prevalence of tumor types and their biological behavior. Sebaceous gland tumors, melanomas, and papillomas made up 82.1% on neoplasms studied. Sebaceous tumors were most frequently encountered, comprising 44% of canine eyelid tumors. Benign tumors (75.3%) were more prevalent than malignant forms (26.7%), and epithelium tumors outnumbered those of mesenchymal origin 134 to 23. A slightly higher percentage of neoplasms were removed from upper eyelids (40.2%) than from lower eyelids (30.2%). The average age of dogs with eyelid tumors was 8 years. Malignant tumors were comparatively larger than benign forms, but metastasis of eyelid tumors was not observed.
D000230:Adenocarcinoma / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary; D000236:Adenoma / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary; D000818:Animals; D004283:Dog Diseases / Q000453:epidemiology / Q000473:pathology; D004285:Dogs; D005142:Eyelid Neoplasms / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary*; D005260:Female; D008297:Male; D008545:Melanoma / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary; D010212:Papilloma / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary; D012626:Sebaceous Gland Neoplasms / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary; D012737:Sex Factors