My dog had a penis tumor removed. Will it recur after neutering?

Many of these anal tumors are fed by sexual hormones such as testosterone. They are dependent on the hormones the body produces naturally (testosterone is naturally produced in the testicles) which makes such tumors grow. If you remove the hormone producing testicles (neutering) the hormone-dependent tumor gets starved and its growth will at least slow down. So castration is definitely advised. Anesthesia nowadays is quite safe and castration is not such a severe surgery. It may give your dog a longer life at a good quality of life.

Yes, it is true that dogs who haven't been neutered are prone to developing anal tumors. Given I can't see him in person, I can't say what the best course of action is for him, but following your vet's recommendation would be best for him in my opinion :-)

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! If the tumor shrunk significantly, hasn't grown and isn't impeding or doesn't have the potential to block his anus then I would just monitor it. Remember that masses are easier to remove when they are small. If the mass starts to grow or bleed (these tumors have this potential) then I would remove it right away before it gets too big. I wish you and Willie the best!

I see that Baobei isn't neutered, and a type of tumor called a perianal adenoma are common in intact males. There is a malignant version of this tumor called a perianal adenocarcinoma, and while it is is less common that the perianal adenoma, it carries a fair to guarded prognosis. I would have him seen by a vet to diagnose if this growth is benign or malignant, and the vet can discuss treatment options with you.

Your veterinarian is most likely correct. From your photo this looks like a benign growth but it could be slightly infected which is why it looks different. It is not uncommon for these masses to get slightly raw/abrasions and have a small infection. I would consider having it removed at the time of his neuter so it will no longer pose any further issues.

This is probably just some scar tissue or a lipoma (a benign fatty tumor) but since it has recently popped up and seems to be growing I would recommend taking Tucker to the vet to have it checked. Your vet can do a fine needle aspirate and cytology. This is where, using a small needle, a sample of the cells are collected and then can be looked at under a microscope. This way your vet can determine what type of mass it is and if it needs to be removed. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach. Best of luck.

If these truly are hematomas, I would be concerned that Leo may have a problem with his platelets, which are the cells in the body that allow the blood to clot. In the absence of trauma, hematomas can occur spontaneously if platelets are very low, because the body is bleeding into places such as the space under the skin. There may also be bleeding into internal cavities, such as the chest or abdomen. As these spots have resolved and recurred, I recommend getting Leo checked out by your vet, at least to determine if his platelet count is normal. If it is, I recommend having your vet check this new spot to see if it might be a skin tumor, such as a hemangioma (benign) or a hemangiosarcoma (malignant)