Intra-abdominal torsion of a neoplastic testicle in a rabbit (Oryctolagus cuniculus) with cryptorchidism |
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| Institution: | 1. Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, USA;2. Tai Wai Small Animal and Exotic Hospital, Hong Kong, Hong Kong;3. Zoo/Exotic Pathology Services, Carmichael, CA, USA;1. University of Miami, Division of Comparative Pathology, Department of Pathology & Laboratory Medicine, Miller School of Medicine, Miami, FL, USA;2. University of Miami, Department of Epidemiology and Public Health, Miller School of Medicine, Miami, FL, USA;3. Institute of Parasitology, Department of Pathobiology, University of Veterinary Medicine Vienna, Vienna, Austria;4. University Hospital for Small Animals, Internal Medicine of Small Animals, Department for Companion Animals and Horses, University of Veterinary Medicine, Vienna, Austria;1. Department of College of Veterinary Medicine, Kansas State University, 1700 Denison Ave, Manhattan, KS 66502, USA;2. Clinical Sciences and College of Veterinary Medicine, Kansas State University, 1700 Denison Ave, Manhattan, KS 66502, USA;3. Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, 1700 Denison Ave, Manhattan, KS 66502, USA;1. Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Oklahoma State University, Stillwater, OK 74078, USA;2. Oklahoma Animal Disease Diagnostic Laboratory, College of Veterinary Medicine, Oklahoma State University, Stillwater, OK 74078, USA;1. Dick White Referrals, Cambridgeshire, UK;2. Wanstead Veterinary Hospital – Goddard Veterinary Group, London, UK;1. James L. Voss Veterinary Teaching Hospital, Fort Collins, CO, USA;2. Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Science, Fort Collins, CO, USA;3. Department of Clinical Sciences, Colorado State University''s College of Veterinary Medicine and Biomedical Sciences, Fort Collins, CO, USA;1. FauneVET, Nantes, France;2. Clinique Vétérinaire des Rochettes, Montaigu, France;3. Centre Hospitalier Vétérinaire Atlantia, Nantes, France |
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| Abstract: | Background: Testicular torsion is a relatively common complication of cryptorchidism in domestic mammals but is currently unreported in rabbits. Case presentation: A 7-year-old Dutch rabbit was examined for sudden anorexia and lethargy. The rabbit was previously diagnosed with unilateral cryptorchidism 5 years earlier; however, the owner declined surgical treatment at that time. Transabdominal ultrasonography showed a structure consistent with an enlarged testis, with decreased echogenicity, and absent blood flow upon color Doppler ultrasonography. After induction of general anesthesia and during preparation for surgery, the patient had an episode of cardiac arrest. After successful resuscitation, bilateral cryptorchidectomy continued as planned. A ventral midline laparotomy was performed and confirmed presence of an enlarged, dark red left testicle torsed on its spermatic cord. The contralateral testicle was atrophic. Both testicles were removed after standard hemostasis. Recovery was uncomplicated. Histopathologic examination revealed a diagnosis of Sertoli cell tumor and extensive hemorrhage and necrosis in the torsed testicle. Conclusions and Clinical Relevance: Based on literature search, this is the first reported case of intra-abdominal torsion of a neoplastic testicle in a cryptorchid rabbit. Early elective cryptorchidectomy before the potential development of life-threating complications may be beneficial in rabbits as in other species. |
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