Experienced and professional animal trainer provide their insights in answering this question :
A. Cryo can be done with a local anesthetic or sedation but is typically performed under GA. Both cryosurgery and traditional surgical resection have excellent long term prognoses if the tumor has not regressed on its own. The mass should be submitted for pathology to confirm it is benign and that margins are clear.

How to Identify Common Pet Problems ?

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The quickest way to treat a histiocytoma is by removal, but many will regress in 3 months. A steroid cream can keep it from bothering the pet and may speed up resolution. Reasons for surgical removal: Ulceration, itching, secondary infection, and bleeding that can`t be controlled.
Treatment involves the surgical removal of the lump to confirm the diagnosis. In 99% of cases, surgical removal is a permanent cure. “In 99% of cases, surgical removal is a permanent cure.”
Treatment of Malignant Histiocytosis in Dogs

Immediate surgery is required to remove any tumors found. If tumors are affecting joint tissues in limbs, an amputation may be recommended. Radiation and chemotherapy can be used with surgery to stop the spread of the cancer, and are often administered over several weeks.

A histiocytoma is an external buttonlike growth on your dog that is hairless or with an ulcerated surface. These are usually benign and are not painful.
Recovery of Histiocytoma in Dogs

If the area is ulcerated, taking great care to keep it clean and to stop the dog licking the growth is important. If the tumor has been removed you need to keep the site dry and clean, make sure any bandaging is kept dry, and report any swelling or bleeding to your veterinarian.

A histiocytoma is a tumor that contains histiocytes (normal immune cells). Histiocytes are located in many parts of your body, including your bone marrow, blood stream, skin, lungs, liver, spleen and lymph nodes. Sometimes, histiocytes travel to tissues where they`re not normally found and cause tumors (histiocytomas).
The histiocytoma is a benign skin growth that usually goes away by itself within a couple of months.
Symptoms. Most commonly histiocytomas are found in young dogs and appear as a small, solitary, hairless lump, although Shar Peis may be predisposed to multiple histiocytomas. They are most commonly found on the head, neck, ears, and limbs, and are usually less than 2.5 cm in diameter. Ulceration of the mass is common.
Most histiocytomas regress spontaneously over a six week period but they can often be scratched at by the dog or they may start to bleed after being accidentally knocked against something. Because they are ulcerated they can feel moist to touch and when the dog is lying on its bedding it can stick to it.
In most cases, histiocytomas in dogs go away on their own without any treatment. Treatment is warranted when a growth does not resolve itself within 3 months.
Keeping the tumor clean with salt-water bathing may help to reduce the risk of infection. You should also prevent your dog from licking at, biting, or interfering with the lump in any way, as this will make surgery more likely to be necessary.
Malignant Histiocytomas

Malignant histiocytosis, or disseminated histiocytic sarcoma, forms cancerous tumors throughout the body, including organs and in some cases bone. The condition can progress rapidly and can be fatal.

Initially, attempt to stop the bleeding by applying direct pressure to the wound with an absorbent dressing, such as dry gauze, followed by a layer of bandage material or a clean, dry cloth. This will protect the wound during transport to the veterinary clinic and prevent any further contamination of the injury.
Do not use rubbing alcohol or hydrogen peroxide as these can damage the tissue and delay healing. Cover up the wound with a bandage. Apply a small amount of antibacterial ointment and cover the wound with a piece of sterile gauze or other bandage. Use the elastic tape to hold the bandage in place.
Most commonly found on the skin on the head, ears, and limbs these small tumors are hard, and can be round like a dome or flat like a button. If the lump feels squishy or fluid filled or is larger than the head of an eraser and continues to grow then it`s time to consult your veterinarian.
Overall, systemic histiocytosis is a rare disease and cutaneous histiocytosis is far more common. Cutaneous histiocytomas originate in cells that manifest Langerhans cells differentiation. Histiocytomas typically occur as solitary lesions, which usually undergo spontaneous regression (Figure 1).
The most frequent sites for histiocytomas are the head (especially the pinna) and the skin of the distal forelegs and feet. The masses are usually domelike or buttonlike (often referred to as “button tumors”) and usually measure 1–2 cm in diameter.
This hereditary cancer syndrome is characterized by bone infarctions, cortical growth abnormalities, pathologic fractures, and painful debilitation.
Background: Histiocytoma is a common benign neoplasm of young dogs. Multiple histiocytomas are rare. Surgical or medical treatment of solitary tumours is not required in the majority of cases because the tumour usually undergoes spontaneous regression.
Histiocytoma tumors are often referred to as button tumors because they are usually less than an inch in size, red, raised, and hairless. Often seen in English Bulldogs, Scottish Terriers, Greyhounds, Boxers, Boston Terriers, and Chinese Shar-Peis these tumors typically regress on their own within two to three months.
Mast cell tumors are quite serious when identified in dogs. If untreated they can cause anaphylactic shock or if they progress into a more aggressive form they can metastasize and ultimately lead to death.
In addition to genetics, the only other risk factors identified to date are a history of orthopedic disease and joint inflammation, and the subsequent development of localized HS in the previously affected joint. Unfortunately, the most common signs of HS are similar to many other diseases and include: Lethargy.
Malignant fibrous histiocytoma, the most frequent soft tissue sarcoma of adulthood, was first described as a new malignant tumour by O`Brian and Stout in the 1960s and the details of the histopathological features of MFH were first described by Kempson and Kyriakos.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. Hi there. My 18month old bullmastiff has a histiocytoma on his right elbow. Would cryotherapy be a better option than surgery under GA?
ANSWER : A. Cryo can be done with a local anesthetic or sedation but is typically performed under GA. Both cryosurgery and traditional surgical resection have excellent long term prognoses if the tumor has not regressed on its own. The mass should be submitted for pathology to confirm it is benign and that margins are clear.

Read Full Q/A … : R

Q. I have a 13 yr old Cocker Spaniel who tore a ligament in back leg. She is blind in one eye and deaf. Should she go through surgery?
ANSWER : A. You need to be guided by your vet. The age needs to be taken into account and I would want liver and kidney blood tests done prior to surgery to ensure they are functioning properly. Also I would expect her to be on iv fluids during the surgery. Recovery can be longer in older dogs too after a general anaesthetic. You should discuss in detail the quality of life and general health of the dog as to wether it is worth putting her through surgery. She is probably too big to be left without surgery so there are really only the two options.

Q. My 12 year old Border Collie/healer mix has a baseball size hematoma under her chest. I am wondering if she would survive the surgery.
ANSWER : A. My first question (if you could answer me back) would be how does anyone know it’s a hematoma, and not a hemangiosarcoma or a hemangioma? Hematomas usually resolve (eventually) on their own – they’re essentially bruises. So they don’t need to be surgically removed, typically. It could also be a hemangioma, which is a benign growth arising from a blood vessel. Typically no one can tell on cytology alone (that’s a needle sample taken from the mass and examined under a microscope) whether a growth like this is cancerous (hemangiosarcoma, or HSA) or benign (hemangioma, or HA). If a biopsy has been done and a diagnosis of HSA has been made, or it’s a HA and it’s causing your dog pain or discomfort, then I would agree that surgery is necessary.

As to whether she would survive the surgery, if your vet is competent in anesthesia (preoperative blood work and chest x-rays have been done to ensure that your dog is healthy otherwise, anesthetic monitoring on blood pressure, heart rate, EKG, oxygenation, etc will be done) and the mass is in a spot that is amenable to removal (i.e. There is plenty of skin in the area to close over the defect created by the excision) then I would say her chances of survival are very good. All this is assuming that the mass is subcutaneous (under the skin) and not actually inside the chest. If it’s in the chest, that’s a much more serious procedure. You can select “consult” if you want to talk about this further.

Q. What second surgery do you choose for a failed extra capsular repair or should a second surgery be done?
ANSWER : A. If you have a large breed dog, a TPLO usually works better. Also you have to figure out the reason for the failure. Was it too much activity too soon? Was the surgery not done properly? Was the rehab not followed? You have to allow at least 8 weeks of just post-op healing with rehab and then slowly get back to normal activity. A good 12-14 weeks before any type of normal activity is recommended and some dogs take longer than others. It’s hard or many dogs and even people to restrict their pets activity level post-op because they feel bad, but it really is necessary for proper and complete healing. It’s hard to say why your surgery option failed or if you should have a second one done without knowing your case in more depth. I would recommend a board certified surgeon perform the surgery if it is done again and you didn’t use one the first time.

Q. My Dachshund is in a lot of pain. She has back problems and I can’t afford surgery for her. Is there something I can do other than the surgery.
ANSWER : A. Alternative to surgery is medical treatment with pain killers, physiotherapy, acupuncture. There are conditions of spinal cord where medical treatment can be as successful as surgery but there are spinal problems when surgery is the only options. I would suggest you to get back to your vets to discuss available treatments and ask if medical treatment is an option for your dog.

Q. My cocker spaniel is 9 years old. He has involuntary bowel movements (little drops) very frequently, especially when he is asleep.
ANSWER : A. Is your dog on a senior dog food? I would get your dog on a high quality high protien dog food. Ask a pet store assosicate or your regular vet for a food recommendation. When you buy a better food the dog will have to eat less to get the same amount of energy from the food. The dog has to eat more of the cheaper foods to get the energy it needs from it. Meaning more poop and buying more food. So the cost really evens out. So the lessen your dogs bowel movements get on a better senior dog food. Next talk to your vet they may have a recommendation. If you switch dogs do it slowly by mixing the foods. Start with 10% new 90% old mixed for at least a week until you have switched to 100% new 0% old. Senior foods have more fiber to help with bowel movements. Take the dog outside to go potty more frequently, right before bed time.

Read Full Q/A … : Symptoms Questions & Answers

Q. We have a 3 yr old Weiner dog, she is having pus in her eyes, I took her to the vet he gave me derma vet ointment, used it as the doctor prescribed
ANSWER : A. If the pus really isn’t all that bad, and it’s just some discharge, your pup may benefit from a diet change. It could be that the food you’re feeding just isn’t right for your dog, and that’s okay! Dogs grow and change over time, and now that your dog is fully matured, a diet change may be in order. Try something like Taste of the Wild, maybe a grain free dog food, Orijen, or Ziwipeak. These are all really great food options.

If the pus is really bad, and continues to get worse, see your vet again and let them know what’s going on. Maybe you could try a diet change, and then see if there are any improvements.

Remember, you should always gradually change a dogs diet. By gradually, I mean you put a tiny bit of new kibble in with a bowl of the old kibble. Reduce the old kibble by just a few bits of kibble. Throughout the course of at least two weeks (or as long as you want depending on whether or not you want to finish off the old food) you slowly add more of the new kibble while removing some of the old kibble. This makes the process gradual, and won’t cause any tummy-upset in your dog.

Q. My dog has kidney stones but surgery is too costly right now. What can I do to help her
ANSWER : A. More information would be required in order to advise on this case and I recommend you discuss options and prognosis with the diagnosing vet; your local humane societies and charities may be able to help in getting her the care she needs. Kidney stones do not generally respond to any medication or diet changes and require removal to prevent serious damage. Some bladder stones can be managed with specific diet changes but this is very specific in relation to the exact type and size of stone and medical management can occasionally cause stones in the bladder to shrink sufficiently that they can then move down the tract and cause blockages lower down and resulting in the need for intricate surgery with a high risk of permanent side effects. The exact size, location and chemical make up is all important in assessing her options and no specific advice can be given without all the relevant information