Document Type : Clinical Report


1 Department of Surgery, Avina pet Hospital, Tehran, Iran

2 Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran



Case Description- Epididymal agenesis is described as the complete or partial lack of the epididymis. In this paper, a two-year-old Pekingese dog with epididymal agenesis is reported during routine castration.
Clinical Finding- The dog was presented to a private pet hospital for conventional castration. Anatomically unilateral epididymal agenesis was observed during orchiectomy. Also, pathologically segmental unilateral epididymal agenesis and atrophy of testis were implied.
Treatment and Outcome- The dog was neutered.
Clinical Relevance- Epididymal agenesis is a highly rare phenomenon in all breeding dogs. To the authors’ knowledge, this is the first report of epididymal agenesis in small breeding dogs. This kind of animal should not use for breeding programs and practitioners pay attention to this anomaly while encountered infertility in dogs.


Main Subjects