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The dangers of 'hidden' testicles


The dangers of 'hidden' testicles
This article contains: cat dog cancer testicles cryptorchidism

Following on from last week's piece on pet neutering, vet Marc Abraham discusses the important topic of cryptorchidism - a condition that can lead to all sorts of complications in male cats and dogs

It's important to recognise if your pet's 'bits' look different to other pets, as these differences can lead to serious life-threatening conditions.

I'm talking about 'hidden' testicles - unsuccessful travellers on a developmental journey starting from right up near the foetal kidneys and reaching a final destination of the scrotum about seven to 10 days after birth.

The condition of hidden testicles - or cryptorchidism, derived from Greek words crypto meaning 'hidden' and orchid meaning 'testicle' - affects both cats and dogs, although it's much rarer in our feline friends, with Persians seemingly most affected. Testicles absent from the scrotum by six to eight weeks coupled with the classic tomcat signs of urine spraying, enlarged jowls, spines on the penis (which usually regress within six weeks after castration) - mean that it's likely that they are either still within the abdomen or, more commonly, just beneath the skin of the cat's inner thigh.

Cryptorchidism occurs in one in 10 dogs, with English Bulldogs, Boxers (pictured above) and many small breeds most commonly affected. Confirmation by examination may prove difficult, with some cases benefiting from waiting until puberty (at five to 12 months, depending on breed) before a definite diagnosis can be made of one or both testicles being undescended.

By far the biggest problem with abdominally retained testicles is an increased likelihood of them turning nasty. The rates of testicular cancer are nearly 14 times higher in dogs with cryptorchidism, making it extremely important to locate and remove the undescended testis and castrate the successfully descended testis at the same time.

Patients suspected of having cryptorchidism often show hair loss due to the production of excess male hormones - this is easily detected by a simple blood test and ensures any risk of related cancer can be detected. With rescue dogs, for example, a full veterinary history may not be available, so attempts to locate already removed abdominal testicles aren't necessary.

Even with recent advances in DNA testing, the genetics of cryptorchidism are still not fully understood. Nevertheless, affected dogs should never be bred from and should always be castrated. More importantly, the genes responsible for cryptorchidism can be carried by both sexes, so both parents should also avoid further breeding, too.

Next week, it's the turn of the girls as we look at the female reproductive disease of pyometra - infection of the uterus.

Marc Abraham is a TV vet who regularly gives the nation pet advice on This Morning, BBC Breakfast and Daybreak. As well as promoting responsible pet ownership, rescue pet adoption, microchipping and responsible dog breeding, Marc is also an active campaigner against the puppy farming industry and is the founder of Pup Aid. Marc has also written the books Vet on Call and Pets in Need and also has the Canine Care iPhone app for dog owners. For more about Marc, visit www.marcthevet.com or follow him on Twitter @marcthevet


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Danielle
however you don't cover this condition if you puppy is over 12 weeks.
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