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[Almost] Everything you wanted to know about lung worms…but were afraid to ask

[Almost] Everything you wanted to know about lung worms…but were afraid to ask. Trisha Oura, DVM 10/19/09. Molly Troxel Acc#122947. Quick review. The host with most…. Definitive: parasite reaches maturity, reproduces Intermediate: transitional for development

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[Almost] Everything you wanted to know about lung worms…but were afraid to ask

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  1. [Almost] Everything you wanted to know about lung worms…but were afraid to ask Trisha Oura, DVM 10/19/09

  2. Molly Troxel Acc#122947

  3. Quick review • The host with most…. • Definitive: parasite reaches maturity, reproduces • Intermediate: transitional for development • Paratenic: “reservoir” not needed for development • Incidental: “dead-end”, no maturation • Nematode • Roundworms • Usually sexual reproduction • Direct/indirect life cycles • Examples: hooks, whips, heartworm • Trematode • Flukes • Almost all parasitic • Usually sexual reproduction • Examples: liver and blood flukes

  4. Canine lung worms

  5. Feline lung worms

  6. Heartworms

  7. Radiographic findings • Diffuse bronchial pattern (thickened airway walls with chronic inflammation) • ddx: PIE, chronic bronchitis, bronchopneumonia, allergic disease • Interstitial/alveolar pattern (focal/multifocal), nodules • due to granulomas, thromboembolism, secondary disease (e.g. pneumonia) • Intraluminal masses

  8. Pansy Ellis Acc # 34921

  9. References 1. Caswell JL, Williams KJ. Infectious diseases of the respiratory system. In: Maxie MG, ed. Jubb, kennedy, and palmer’s pathology of domestic animals vol.2. 5th ed. Elsevier, 2007;645-653. 2. Maxie MG, Robinson WF. Diseases of the cardiovascular system. In: Maxie MG, ed. Jubb, kennedy, and palmer’s pathology of domestic animals. vol.3. 5th ed. Elsevier, 2007;87-89. 3. Zajac AM, Conboy GA. Veterinary clinical parasitology. 7th ed. Blackwell Publishing, 2006;4-10. 4. Lamb CR. Canine and feline lung. In: Thrall DE. Textbook of veterinary radiology. 5th ed. Saunders, 2007;591-598. 5. Boag AK, et al. Radiographic findings in 16 dogs infected with Angiostrongylus vasorum, Vet. Rec. 2004(154);426–430.

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