1 / 12

Feline Nasopharyngeal Polyps

Feline Nasopharyngeal Polyps. Erica Fields, DVM Nov. 16, 2009 Acc # 124825. Maddie. MRN 152368 6 year old FS DSH Purulent left ear discharge for 2 mos Fleshy pink mass visible in external ear canal. CT images. CT images. Differential Diagnoses. Inflam. polyp

mckile
Télécharger la présentation

Feline Nasopharyngeal Polyps

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Feline Nasopharyngeal Polyps Erica Fields, DVM Nov. 16, 2009 Acc # 124825

  2. Maddie • MRN 152368 • 6 year old FS DSH • Purulent left ear discharge for 2 mos • Fleshy pink mass visible in external ear canal

  3. CT images

  4. CT images

  5. Differential Diagnoses • Inflam. polyp • Neoplasia* – external canal • Ceruminous gland adenoma • SCC • Sebaceous gland adenocarcinoma • Neoplasia* – middle ear • Carcinomas (esp. SCC) • LSA • FSA • Cholesteatoma (esp. dogs) * 87.5 % of feline ear canal tumors are malignant Fan and de Lorimier, 2004

  6. Inflammatory (Nasopharyngeal) Polyps • Arise from mucosa of middle ear, auditory tube, or pharynx • Loose fibrovascular tissue covered by epithelial layer, with mixed inflammatory infiltrates • Presence of ciliated epithelium is characteristic, but not always seen • Etiology unknown • Congenital? • Chronic URT inflammation? • Viral (Calicivirus, Herpesvirus-1)? • Chronic otitis media? • Ascending nasopharyngeal infection? www.adelaidevet.com.au Fan and de Lorimier, 2004 and Seitz, et al, 1996

  7. Young cats – most are under 3 yo (mean is 24 mos) • Most unilateral, but can be bilateral • Abyssinians overrepresented • Clinical signs: • Upper respiratory (sneezing, dysphonia, dyspnea, dysphagia, stertor, nasal dc) • Otitis media/interna (head tilt, nystagmus, Horner’s syndrome) • Otitis externa (otorrhea, head shaking) • Can extend to cerebellum, temporal lobe, or brainstem! www.acfacat.com Fan and de Lorimier, 2004 and Cook, et al, 2003

  8. Diagnosis • Otoscopy • Oropharyngeal examination • IMAGING • Radiographs – open-mouth skull, plus thorax (look for lower respiratory tract signs) • CT • Less superimposition • Can see brain extension • Better detail and localization • Treatment • Must know location to select right procedure! • Traction vs. VBO/TECA veterinarynews.dvm360.com Seitz, et al, 1996 and Fan and de Lorimier, 2004

  9. Carcinoma

  10. Carcinoma

  11. Cholesteatoma

  12. References • Cook LB, Bergman RL, Bahr A, Boothe HW. 2003. Inflammatory polyp in the middle ear with secondary suppurative meningoencephalitis in a cat. Veterinary Radiology and Ultrasound. 44(6): 648-651. • Fan TM and de Lorimier L-P. 2004. Inflammatory polyps and aural neoplasia. Veterinary Clinics: Small Animal Practice. 34: 489-509. • Seitz SE, Losonsky JM, Maretta SM. 1996. Computed tomographic appearance of inflammatory polyps in three cats. Veterinary Radiology and Ultrasound. 37 (2): 99-104.

More Related