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Animal Osteosarcoma Treatment Rockville MD

Muffin, an 8-year-old female Rottie, presents with a two-week history of right front leg lameness. The physical exam is within normal limits except for a firm mass on the distal forearm, which is painful on palpation. You suspect a tumor.

Kenhaven Animal Clinic
(301) 363-7449
12311 Wilkins Ave
Rockville, MD
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Monday 9:00 AM - 1:00 PM
Tuesday 9:00 AM - 1:00 PM
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Thursday 9:00 AM - 1:00 PM
Friday 9:00 AM - 1:00 PM
Saturday 9:00 AM - 1:00 PM
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Animal Boarding, Animal Flea Control, Animal Grooming, Animal Microchipping, Declawing, Emergency Veterinary Clinic, Exotic Animal Vet, Holistic Veterinary Medicine, Small Animal Vet, Spaying/Neutering, Veterinarians, Veterinary Dentistry, Veterinary Euthanasia, Veterinary House Calls, Veterinary Medical Specialties, Veterinary Surgery, Veterinary Vaccinations

Flower Valley Veterinary Clinic
(301) 683-8444
4201 Norbeck Rd
Rockville, MD
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New Clients will receive one Healthy Pet Complimentary First Wellness Exam.
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Monday 8:00 AM - 6:00 PM
Tuesday 8:00 AM - 6:00 PM
Wednesday 8:00 AM - 6:00 PM
Thursday 8:00 AM - 6:00 PM
Friday 8:00 AM - 6:00 PM
Saturday 9:00 AM - 1:00 PM
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Animal Flea Control, Animal Grooming, Animal Microchipping, Declawing, Small Animal Vet, Spaying/Neutering, Veterinarians, Veterinary Dentistry, Veterinary Euthanasia, Veterinary Surgery, Veterinary Vaccinations

VCA Veterinary Referral Associates
(301) 569-2687
500 Perry Parkway
Gaithersburg , MD
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Monday 24 Hours
Tuesday 24 Hours
Wednesday 24 Hours
Thursday 24 Hours
Friday 24 Hours
Saturday 24 Hours
Sunday 24 Hours
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24-Hour Vet, Bird Vet, Emergency Veterinary Clinic, Exotic Animal Vet, Reptile Vet, Small Animal Vet, Veterinarians, Veterinary Dentistry, Veterinary Euthanasia, Veterinary Medical Specialties, Veterinary Surgery

Negola's Ark Veterinary Hospital
(301) 363-7493
9401 Fields Rd
Gaithersburg, MD
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Hours
Monday 8:00 AM - 6:00 PM
Tuesday 8:00 AM - 8:00 PM
Wednesday 8:00 AM - 8:00 PM
Thursday 8:00 AM - 6:00 PM
Friday 8:00 AM - 6:00 PM
Saturday 8:00 AM - 12:00 PM
Sunday Closed
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Animal Boarding, Animal Daycare, Animal Flea Control, Animal Microchipping, Declawing, Emergency Veterinary Clinic, Small Animal Vet, Spaying/Neutering, Veterinarians, Veterinary Dentistry, Veterinary Euthanasia, Veterinary Medical Specialties, Veterinary Surgery, Veterinary Vaccinations

Falls Road Veterinary Hospital
(301) 363-7129
10229 Falls Rd.
Potomac, MD
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Monday 8:00 AM - 8:00 PM
Tuesday 8:00 AM - 8:00 PM
Wednesday 8:00 AM - 8:00 PM
Thursday 8:00 AM - 6:00 PM
Friday 8:00 AM - 6:00 PM
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Sunday Closed
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Animal Boarding, Animal Daycare, Animal Flea Control, Animal Grooming, Animal Microchipping, Declawing, Small Animal Vet, Spaying/Neutering, Veterinarians, Veterinary Dentistry, Veterinary Euthanasia, Veterinary Surgery, Veterinary Vaccinations

VCA North Rockville Animal Hospital
(301) 202-4096
1390 East Gude Drive
Rockville, MD
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Monday 7:30 AM - 7:00 PM
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Wednesday 7:30 AM - 6:00 PM
Thursday 7:30 AM - 7:00 PM
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Animal Boarding, Animal Daycare, Animal Flea Control, Animal Grooming, Animal Microchipping, Bird Vet, Declawing, Small Animal Vet, Spaying/Neutering, Veterinarians, Veterinary Dentistry, Veterinary Euthanasia, Veterinary Medical Specialties, Veterinary Surgery

Montgomery Animal Hospital
(301) 920-7517
12200 Rockville Pike
Rockville, MD
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Monday 7:30 AM - 7:00 PM
Tuesday 7:30 AM - 7:00 PM
Wednesday 7:30 AM - 7:00 PM
Thursday 7:30 AM - 7:00 PM
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Sunday Closed
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Animal Boarding, Animal Daycare, Animal Flea Control, Animal Microchipping, Declawing, Small Animal Vet, Spaying/Neutering, Veterinarians, Veterinary Dentistry, Veterinary Euthanasia, Veterinary Medical Specialties, Veterinary Surgery

Animalia Mobile Clinic
(240) 406-7227
16698 Oakmont Ave
Gaithersburg, MD
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Seven Locks Animal Hospital
(301) 388-8759
7817 Tuckerman Ln
Potomac, MD
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Monday 8:00 AM - 6:00 PM
Tuesday 8:00 AM - 6:00 PM
Wednesday 8:00 AM - 6:00 PM
Thursday 8:00 AM - 6:00 PM
Friday 8:00 AM - 6:00 PM
Saturday 8:00 AM - 12:00 PM
Sunday Closed
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Animal Flea Control, Animal Microchipping, Declawing, Emergency Veterinary Clinic, Small Animal Vet, Spaying/Neutering, Veterinarians, Veterinary Dentistry, Veterinary Euthanasia, Veterinary House Calls, Veterinary Medical Specialties, Veterinary Surgery

Olney-Sandy Spring Veterinary Hospital
(301) 683-8426
1300 Olney Sandy Spring Rd
Sandy Spring, MD
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New Client Coupon

This coupon entitles you to $20.00 off any veterinary services.

This offer is valid to new clients only and may not be used in conjunction with other discounts. Veterinary services exclude grooming and food purchases.

Hours
Monday 8:00 AM - 7:30 PM
Tuesday 8:00 AM - 7:30 PM
Wednesday 8:00 AM - 7:30 PM
Thursday 8:00 AM - 7:30 PM
Friday 8:00 AM - 6:00 PM
Saturday 8:00 AM - 2:00 PM
Sunday Closed
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Animal Boarding, Animal Daycare, Animal Flea Control, Animal Grooming, Animal Microchipping, Declawing, Emergency Veterinary Clinic, Holistic Veterinary Medicine, Small Animal Vet, Spaying/Neutering, Veterinarians, Veterinary Dentistry, Veterinary Docking, Veterinary Euthanasia, Veterinary Medical Specialties, Veterinary Surgery

Managing Animals with Osteosarcoma

Muffin, an 8-year-old female Rottie, presents with a two-week history of right front leg lameness. The physical exam is within normal limits except for a firm mass on the distal forearm, which is painful on palpation. You suspect a tumor.

How would you approach this case? What are your rule-outs?

A: A suspicious lesion in the right radius of Muffin, an 8-year-old female Rottie. Photo by Dr. Phil Zeltzman
Radiographs of the distal radius and ulna are the next logical step. They reveal a lytic and proliferative lesion with soft-tissue swelling (see photo A). Malignant long bone tumors include osteosarcoma (about 85 percent of the time), chondrosarcoma (5 percent), fibrosarcoma (5 percent) and hemangiosarcoma (5 percent). There is a small chance of a metastatic lesion. If this were a benign lesion, it could be an osteoma, chondroma or bone cyst. It also could be osteomyelitis from a bacterial or fungal infection.

Euthanasia offered as a sole treatment option is not ethically acceptable and medically recommended in 2010. Primary bone cancer is a treatable condition that requires a thorough work-up before irreversible decisions are made.

A standard work-up should include:

  • CBC and chemistry. An increased alkaline phosphatase may be correlated with a poorer prognosis in cases of osteosarcoma. (See JAVMA, 1998, Vol. 213.)
  • Three views of the thorax, to detect visible metastasis (macro-metastasis).
  • A bone biopsy.
  • Fungal and bacterial cultures of the bone.

The timing of bone biopsy is debatable. If the clinician is convinced that the lesion is consistent with osteosarcoma, or if the client has financial constraints, an open discussion should take place about the pros and cons of performing an amputation without the benefit of a prior biopsy.

If amputation is elected, then a biopsy and cultures should be harvested afterward to confirm the suspicion. This is a huge leap of faith for the client, so it is important to document what was discussed and what the client chose.

How It’s Done

Should a biopsy be preferred first, then the surgery site is shaved, scrubbed and draped. A stab incision is performed in the skin. A hemostat or periosteal elevator is used to approach the bone. Several cores of bone are sampled with a Jamshidi needle (see photo B) or a Michelle trephine.

It is prudent to use the smallest needle possible to decrease the chances of a pathological fracture of the bone. This is why most surgeons prefer Jamshidi needles. They are available from a variety of manufacturers. A 4-inch, 8 to 11 G needle is often used.

The needle and its sharp stylet are placed on the bone and a small indentation is made. The stylet is removed, and cores of bone are harvested using a rotational motion in various directions. The first cortex and the entire medullary cavity are biopsied.

Maintain Bone’s Strength

B: Bone biopsy with a Jamshidi needle in a 4-year-old Labrador with osteo...

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