EN
The dermatoid sinus and dermatoid cyst are disorders which appear during intrauterine development. This article presents the first fully documented case of the dermatoid sinus in the Great Dane bitch. Clinical examination revealed the abnormality in the form of two encapsulated tumors of 2cm and 4cm in diameter located in the dorsal part of the neck. Ultrasonography proved to be the most accurate diagnostic tool. A surgical operation was chosen as an effective method of treatment. Surgical treatment involved the extirpation of the dermatoid sinus along with a margin of intact tissues. The final diagnosis was based of histopathology. The wound healed without complications. In long-term observation, three months after the surgery, no recurrance has been confirmed.