Testicular Teratoma in an Equine Cryptorchid

Abstract

SUMMARY An abnormal cryptorchid testicle removed from the abdominal cavity of a 4 year old Thoroughbred stallion is described. The abnormal organ conforms to the requirements of Willis (1960) for a teratoma. The difference between these tumours in man and horses is discussed. RÉSUMÉ Un testicule cryptorchide anormal fut retiré de la cavité abdominale d'un Pur Sang âgé de quatre ans. L'organe anormal correspondait par ses caractères aux normes énoncées par Willis (1960) pour identifier un tératome. On discute de la différence présentée par ces tumeurs chez l'Homme et chez le Cheval. ZUSAMMENFASSUNG Es wird ein abnormer, abdominaler Hoden bei einem vierjährigen Vollbluthengsten beschrieben. Der abnormale Hoden erfüllt die Ansprüche, die Willis (1960) an ein Teratom gestellt hat. Die Unterschiede zwischen derartigen Tumoren beim Menschen und beim Pferd werden diskutiert.

Congenital tumours and tumour‐like lesions in domestic animals. 3. Horses. A review

“…Testicular teratomas have been reported most commonly in the horse, occur in young animals, and are often associated with cryptorchidism (59,60). We will restrict ourselves by selecting some cases of particular interest In three horses with very large retained testicles benign teratomas were found in combination with large cysts.…”

Laparoscopic-assisted diagnosis of anomalous unilateral abdominal cryptorchidism

“…1997). This case adds to the series of anecdotal reports of anomalies with regard to cryptorchidism/monorchidism in the horse (Smyth 1979; Parks et al . 1989; Santschi et al .…”

“…1989; Kelmer et al . 2006), the formation of testicular cysts, teratomas or other tumours (Smyth 1979; Caron et al . 1985; Hay et al .…”

Atypical cryptorchid castrations

“…In some cases the abdominal testicle can be extremely large. Extreme enlargement can be caused by testicular neoplasm, most commonly teratoma or a cystic testes (Adams ; Smyth ; Cribb and Boure ; Adams and Hendrickson ). In these cases gubernacular structures or the spermatic cord are found but when attempting to exteriorise the testicle the weight or size of the testicle limits movement.…”