Owner
Veterinarian
Surgical Oncology Under Real-World Constraints
"Molly"
Start
The Recurrent Lump After a “Simple Removal” Soft Tissue Sarcoma
Molly now presents with a recurrent mass at the scar, larger than before and more fixed to deeper tissues. The owner is angry, distrustful, and asking for a guarantee that “this will be fixed properly this time”
Molly is a 10-year-old female neutered Border Collie. Six months ago, a subcutaneous mass on her lateral thorax near the axilla was removed at another practice as a presumed lipoma. Histopathology later reported a soft tissue sarcoma with incomplete margins.
They are worried about escalating costs and want to avoid referral unless it is clearly necessary. You are concerned about the regional
anatomy, the feasibility of achieving appropriate margins in a scar bed, and whether advanced imaging is required for safe planning.
Next
Veterinarian
Clinical objections
Next
Veterinarian
A colleague says, “We already know it’s a sarcoma, just resect it wider.”
Talk through your differentials and risk assessment for a recurrent scar-associated mass, and explain how you decide what must be confirmed before definitive surgery.
Veterinarian
Describe your stepwise diagnostic and staging approach...
That balances practicality with oncologic planning. Include how you would use biopsy choice to protect the eventual surgical field and how you would decide whether imaging is essential rather than “nice to have”.
Veterinarian
A colleague says, “The owner will not pay for CT, so we will do the best we can.”
Explain how you would define “best” in this context, and where your personal stop rules are if you cannot plan a defensible margin strategy or reconstruction.
Veterinarian
Describe the escalation triggers
That push you towards referral. Include anatomical complexity, uncertainty about resectability, and the risks of repeated marginal excision.
Owner
What would you do if it were your pet?
Next
Owner
Empathy
Begin with an empathy statement that validates the owner’s frustration and worry, while keeping the conversation calm and professional.
Owner
Explain what has been learnt from the previous histology
And what remains uncertain now that the mass has recurred. Frame why a second surgery is not simply a repeat of the first, and why planning matters more in a scar bed.
Owner
Offer options scaled to budget and urgency
Including a staged plan that gathers essential information first, and an option that focuses on comfort and quality of life if definitive control is unlikely or not affordable. Avoid implying that any option guarantees outcome.
Owner
Answer, “What would you do if it were your pet?”
By explaining the reasoning you would use to prioritise the best chance of meaningful control with the least avoidable harm, while acknowledging that the first surgery has already changed the playing field.
Well done
You successfully completed the challenge and addressed all of our questions, both from a professional perspective and as a pet owner
STS_M3_CDSC_02_The Recurrent Lump After a “Simple Removal” Soft Tissue
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Created on December 23, 2025
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Transcript
Owner
Veterinarian
Surgical Oncology Under Real-World Constraints
"Molly"
Start
The Recurrent Lump After a “Simple Removal” Soft Tissue Sarcoma
Molly now presents with a recurrent mass at the scar, larger than before and more fixed to deeper tissues. The owner is angry, distrustful, and asking for a guarantee that “this will be fixed properly this time”
Molly is a 10-year-old female neutered Border Collie. Six months ago, a subcutaneous mass on her lateral thorax near the axilla was removed at another practice as a presumed lipoma. Histopathology later reported a soft tissue sarcoma with incomplete margins.
They are worried about escalating costs and want to avoid referral unless it is clearly necessary. You are concerned about the regional
anatomy, the feasibility of achieving appropriate margins in a scar bed, and whether advanced imaging is required for safe planning.
Next
Veterinarian
Clinical objections
Next
Veterinarian
A colleague says, “We already know it’s a sarcoma, just resect it wider.”
Talk through your differentials and risk assessment for a recurrent scar-associated mass, and explain how you decide what must be confirmed before definitive surgery.
Veterinarian
Describe your stepwise diagnostic and staging approach...
That balances practicality with oncologic planning. Include how you would use biopsy choice to protect the eventual surgical field and how you would decide whether imaging is essential rather than “nice to have”.
Veterinarian
A colleague says, “The owner will not pay for CT, so we will do the best we can.”
Explain how you would define “best” in this context, and where your personal stop rules are if you cannot plan a defensible margin strategy or reconstruction.
Veterinarian
Describe the escalation triggers
That push you towards referral. Include anatomical complexity, uncertainty about resectability, and the risks of repeated marginal excision.
Owner
What would you do if it were your pet?
Next
Owner
Empathy
Begin with an empathy statement that validates the owner’s frustration and worry, while keeping the conversation calm and professional.
Owner
Explain what has been learnt from the previous histology
And what remains uncertain now that the mass has recurred. Frame why a second surgery is not simply a repeat of the first, and why planning matters more in a scar bed.
Owner
Offer options scaled to budget and urgency
Including a staged plan that gathers essential information first, and an option that focuses on comfort and quality of life if definitive control is unlikely or not affordable. Avoid implying that any option guarantees outcome.
Owner
Answer, “What would you do if it were your pet?”
By explaining the reasoning you would use to prioritise the best chance of meaningful control with the least avoidable harm, while acknowledging that the first surgery has already changed the playing field.
Well done
You successfully completed the challenge and addressed all of our questions, both from a professional perspective and as a pet owner