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Trichoblastomas (Figure 1) in dogs were previously known as benign basal cell tumors; they were reclassified as trichoblastomas because, histopathologically, the tumor shows differentiation of the hair germ of the developing follicle. 2 They occur most commonly around the head and neck and occasionally metastasize.
Basal cell tumors arise in middle-aged to older dogs and cats, with some dog breeds, such as poodles, being over-represented. Diagnosis. Histopathology now differentiates among trichoblastoma, basal cell carcinoma, sweat gland tumors, and other epithelial tumors, but cytologists may still use the term basal cell tumor as a broad cytologic ...
Basal cell tumors vary in size, from a few centimeters to inches in diameter, and most commonly appear as single, firm, hairless, raised masses in the skin, often on the head, neck, or shoulders. Occasionally, they may be cystic or ulcerate, and some may stick out like stalks from the skin surface.
Canine basal cell tumors most commonly develop in middle-aged to older dogs. Many breeds are predisposed, especially Wirehaired Pointing Griffons and Kerry Blue and Wheaten Terriers. These tumors are found most commonly on the head (especially the ears), the neck, and forelimbs.
10 lis 2021 · Mast cell tumors are more common in dogs than cats. Cytologically, they are cellular and consist of a population of round cells with a moderate amount of basophilic cytoplasm, filled with metachromatic (purple) granules.
16 lis 2023 · Basal cell tumors are diagnosed with cytology or a biopsy (i.e., histopathology). Fine needle aspiration (FNA), which involves collecting tumor cells for cytology using a needle and syringe, can be performed during a routine office visit without sedation.
Abstract. A retrospective study was undertaken in which cytological features of basal cell tumours from 18 dogs and 12 cats were examined. Fine-needle aspiration biopsy was performed for cytological examination and diagnosis was confirmed on histopathological examination of excised tumour specimens.
