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Canine perineal tumours.

A Berrocal, J H Vos, T S van den Ingh

    Zentralblatt Fur Veterinarmedizin. Reihe A
    |December 1, 1989
    PubMed
    Summary
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    Most canine perineal tumors originate from glandular structures. Differentiated tumors are typically benign, while undifferentiated carcinomas exhibit malignant behavior and metastasis.

    Area of Science:

    • Veterinary Pathology
    • Canine Oncology

    Background:

    • Perineal tumors are common in dogs.
    • Histological classification is crucial for prognosis.

    Purpose of the Study:

    • To histologically evaluate canine perineal tumors.
    • To determine the origin and differentiation of these tumors.
    • To correlate histological findings with clinical behavior.

    Main Methods:

    • Histological evaluation of 139 canine perineal tumors.
    • Classification based on differentiation and origin.
    • Analysis of tumor behavior and metastatic potential.

    Main Results:

    • 96.4% of tumors originated from glandular structures.
    • Well-differentiated tumors were common (58.3%).

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  • Undifferentiated carcinomas showed malignant behavior and metastasis.

    • Conclusions:

    • Perianal gland tumors are predominantly benign.
    • Carcinomas lacking glandular differentiation are malignant.
    • Canine perineal tumors share features with other adenocarcinomas and carcinoids.