Doug, an 18-year-old palomino pony, was seen by equine vet Jess last August after his owners noticed a build-up of discharge around his sheath that was falling onto his hind legs.

During a closer examination, and following a sheath clean performed under sedation, Jess discovered multiple masses on the body of Doug’s penis. These lesions had the typical appearance of squamous cell carcinoma, a type of cancerous tumour that can affect this area in horses.

The largest masses were removed under local anaesthetic and biopsy samples were submitted for histopathology, which confirmed the suspected diagnosis.

Doug’s owners were keen to explore treatment options that did not involve extensive surgery. A treatment plan was developed using a chemotherapy medication applied directly to the affected areas by Jess over several treatment sessions.

Doug has been an absolute trooper throughout the process. After a few months off he is now back having fun with his lovely family and we are delighted to report that his most recent check-ups have shown an excellent response to treatment – as you can see!

Early investigation of unusual discharge, swellings or lesions can make a big difference to outcomes like Doug’s. If you ever notice anything unusual with your horse, please don’t hesitate to get in touch with our equine vet team.

Thank you to Doug’s owners for allowing us to share his story.

If you have any concerns regarding your horse please do not hesitate to contact the team. At least two of our Oakhill Equine Vets are on call 24/7, 365 days/year.