Finding a Lump on Your Dog — What Comes Next
Discovering a lump or bump on your dog is alarming. Your veterinarian performs a fine needle aspirate, sends it to the lab, and then delivers the news: it needs to come out. The question that follows is always about cost — and in San Diego, tumor removal surgery can range from $1,500 for a straightforward mass to $5,000 or more for complex procedures involving wide margins, reconstructive closure, or specialized location.
CBX Pet Care provides an alternative. We coordinate tumor removal surgery with experienced veterinary surgeons in Tijuana at 50-85% less than San Diego prices. The surgery is the same. The anesthesia protocols are the same. The histopathology analysis is the same. The cost is dramatically different.
Types of Tumors We Handle
Mast Cell Tumors
Mast cell tumors (MCTs) are the most common skin tumor in dogs, accounting for about 20% of all canine skin tumors. They can look like almost anything — a small raised bump, a red patch, a wart-like growth. Grading (I, II, or III) determines the surgical approach and whether additional treatment like chemotherapy is recommended.
Grade I and most Grade II mast cell tumors are cured with surgical removal using adequate margins (typically 2-3 cm laterally and one fascial plane deep). Grade III tumors are more aggressive and may require chemotherapy after surgery. CBX coordinates both the surgery and any follow-up chemotherapy if needed.
Lipomas
Lipomas are benign fatty tumors, extremely common in middle-aged and older dogs. While they are not cancerous, they can grow large enough to interfere with movement or comfort. Removal is straightforward and falls in the minor surgery category ($200-$500).
Some lipomas are infiltrative, meaning they grow between muscle fibers and are more difficult to remove completely. These may be classified as minor or major depending on size and location.
Soft Tissue Sarcomas
Soft tissue sarcomas (STS) include fibrosarcoma, hemangiopericytoma, and peripheral nerve sheath tumors. They tend to be locally invasive, growing into surrounding tissue like tentacles. Successful removal requires wide surgical margins — typically 3 cm on all sides and one fascial plane deep.
Because of the wide margins needed, STS removal often involves significant reconstructive work and typically falls in the major surgery category ($800-$1,500).
Melanoma
Oral melanoma is one of the most common malignant tumors in dogs. Surgical removal is often the first step, followed by staging to determine if the cancer has spread. Skin melanoma in dogs is generally benign and easily removed.
Perianal Tumors
Perianal adenomas (benign) and perianal adenocarcinomas (malignant) occur around the anus, more commonly in unneutered male dogs. Surgical removal combined with neutering (for adenomas) is the standard treatment.
Mammary Tumors
Mammary tumors are common in unspayed female dogs. Approximately 50% are benign and 50% are malignant. Surgical removal — either lumpectomy, partial mastectomy, or full chain mastectomy — is the primary treatment. CBX coordinates all types of mammary surgery.
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Text or call 619-914-2990 • Email info@cbxpetcare.com
Cost Comparison — San Diego vs. CBX Pet Care
| Procedure | San Diego | CBX (Tijuana) | Savings |
|---|---|---|---|
| Lipoma removal (small) | $800–$1,500 | $200–$400 | 60–75% |
| Mast cell tumor (Grade I-II) | $1,500–$3,000 | $300–$800 | 65–80% |
| Soft tissue sarcoma (wide excision) | $2,000–$5,000 | $800–$1,500 | 55–75% |
| Mammary chain mastectomy | $2,500–$4,500 | $800–$1,500 | 60–70% |
| Oral tumor removal | $2,000–$4,000 | $600–$1,200 | 60–75% |
| Histopathology (per sample) | $150–$400 | $50–$150 | 55–70% |
The Pre-Surgical Workup
Before any tumor removal surgery, the veterinary team needs information to plan the procedure safely. Here is what the pre-surgical workup typically includes:
- Fine Needle Aspirate Results: You will provide the cytology report from your San Diego veterinarian. This tells the surgeon what type of tumor they are dealing with and helps plan the surgical approach.
- Pre-Anesthetic Bloodwork: Performed at the clinic on surgery day. This checks organ function to ensure your dog can safely undergo anesthesia. Included in the procedure cost.
- Imaging (if needed): For suspected malignant tumors, chest X-rays or abdominal ultrasound may be recommended to check for metastasis before proceeding with surgery. These are available at the same clinic on the same day.
- Physical Assessment: The surgeon examines the tumor, assesses margins, and plans the surgical approach. For larger or complex tumors, the surgeon may mark the incision plan on the skin.
Surgery Day — What Happens
Tumor removal follows our standard 3/4-day service model. You drop your pet off between 7-9 AM at the meeting point. Our coordinator transports your pet to the clinic. Here is the typical timeline:
- Arrival and pre-op prep: Physical exam, bloodwork, IV catheter placement
- Check-in call: You speak with the surgeon about the planned procedure
- Surgery: Duration varies from 30 minutes for a simple lipoma to 2+ hours for wide excision of a sarcoma
- Recovery monitoring: Your pet is observed as they wake from anesthesia
- Checkout call: The surgeon reports how the procedure went, discusses margins, and provides aftercare instructions
- Return transport: Your pet is returned to the meeting point by 1-4 PM
Post-Operative Care and Recovery
After tumor removal, your dog will need careful home care. The surgical team provides detailed written and verbal instructions during the checkout call. Here is what to expect:
First 24-48 hours: Some lethargy and decreased appetite are normal as anesthesia effects wear off completely. Your dog should be kept quiet and calm. An Elizabethan collar (cone) prevents licking at the incision.
Days 3-7: Mild swelling and bruising around the incision are normal. Watch for excessive redness, discharge, or increasing swelling, which could indicate infection. Pain medication is typically prescribed for 5-7 days.
Days 10-14: Sutures or staples are removed by your local veterinarian in San Diego. The incision should be well-healed by this point.
Histopathology results: The removed tissue is sent for histopathology analysis. Results typically take 7-10 business days. Our coordinator relays the results to you and, if needed, discusses next steps with the pathologist.
When NOT to Travel for Tumor Removal
Our coordinators and partner surgeons are honest about situations where cross-border surgery is not appropriate:
- Tumors that are actively bleeding and require emergency surgery — go to your local emergency vet
- Pets in very poor body condition or with severe organ compromise that makes same-day travel risky
- Tumors requiring multi-day hospitalization or ICU-level post-operative monitoring
- Cases where the tumor has clearly metastasized widely and surgery would not improve quality of life
In these situations, we will tell you honestly. We would rather lose a booking than put your pet at risk.
Frequently Asked Questions About Tumor Removal
How do I know if my dog’s tumor needs to be removed?
Your San Diego veterinarian’s recommendation is the starting point. Generally, any tumor identified as potentially malignant on cytology should be removed. Even benign tumors may need removal if they are growing rapidly, interfering with movement, or located in an area prone to irritation.
Will the surgeon send the tumor for histopathology?
Yes, all removed tumors are submitted for histopathology analysis. This confirms the tumor type, grade, and whether the surgical margins are clean (meaning no cancer cells at the edge of the removed tissue). Results take 7-10 business days and are communicated to you by our coordinator.
What happens if the margins are not clean?
If histopathology shows cancer cells at the surgical margins (incomplete excision), the oncologist may recommend a second surgery to obtain wider margins, radiation therapy, or chemotherapy depending on the tumor type. Our coordinators will discuss all options with you.
Can my dog eat before tumor removal surgery?
Your dog must fast for 12 hours before surgery (no food after midnight the night before). Water can be offered until 2 hours before drop-off. Specific fasting instructions will be provided when you book.
How long until my dog is back to normal after surgery?
Simple mass removals typically have a 10-14 day recovery. Major excisions with wide margins may take 3-4 weeks for full healing. Most dogs are comfortable and eating normally within 24-48 hours of surgery, though activity should be restricted until the incision is fully healed.
Do you remove tumors from cats too?
Yes. We coordinate tumor removal for both dogs and cats. Cats have even simpler border requirements — no microchip or CDC form needed. Common feline tumors we handle include mammary tumors, fibrosarcomas, and squamous cell carcinomas.
Areas We Serve
San Diego, Chula Vista, National City, Imperial Beach, El Cajon, La Mesa, Santee, Poway, Escondido, Encinitas, Carlsbad, Oceanside, La Jolla, Pacific Beach, Mission Valley, North Park, Hillcrest
Your Pet Deserves the Best Care — At a Price You Can Afford
Call or text 619-914-2990
$50 non-refundable deposit to book • Zelle payments get a 3% cash discount
Last updated: March 2026