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Vetdle Archive

Archive Case #64: Canine Tracheal Collapse

Dog veterinary case - Easy - May 6, 2026

Clinical Clues

  1. An older toy breed dog is presented for a long-running harsh cough that worsens with excitement.
  2. The owner says the cough sounds goose-like and is most noticeable on walks.
  3. Warm weather and pulling against the collar make the episodes worse.
  4. Gentle palpation over the neck reliably triggers a coughing fit.
  5. Dynamic airway imaging shows marked collapse of the affected segment during respiration.
  6. Canine tracheal collapse is a classic cause of this harsh cough in small-breed dogs.

Diagnosis

Canine Tracheal Collapse

This case is most consistent with Canine Tracheal Collapse because the dog has a classic honking cough, small-breed signalment, and imaging evidence of dynamic tracheal narrowing. The most important clues are the collar-triggered cough and airway collapse on imaging, which make a primary lung disease less likely.

Learning review

Review the case evidence

Use the paired clues to explain how the evidence in this dog case supports the provided diagnosis, Canine Tracheal Collapse, then compare your reasoning with the case explanation.

Evidence checkpoints

Clues 1-2

  1. Clue 1: An older toy breed dog is presented for a long-running harsh cough that worsens with excitement.
  2. Clue 2: The owner says the cough sounds goose-like and is most noticeable on walks.

Clues 3-4

  1. Clue 3: Warm weather and pulling against the collar make the episodes worse.
  2. Clue 4: Gentle palpation over the neck reliably triggers a coughing fit.

Clues 5-6

  1. Clue 5: Dynamic airway imaging shows marked collapse of the affected segment during respiration.
  2. Clue 6: Canine tracheal collapse is a classic cause of this harsh cough in small-breed dogs.

Self-review prompts

  1. After clues 1-2, what evidence from this dog case shaped your initial interpretation?
  2. When you compare clues 3-4 with clues 1-2, what changed in your reasoning about Canine Tracheal Collapse?
  3. How do clues 5-6 align with the case explanation for Canine Tracheal Collapse?

Educational Use

Vetdle archive cases are educational veterinary games for diagnostic reasoning practice. They do not provide veterinary advice, diagnosis, treatment, or professional medical guidance.