Canis ISSN: 2398-2942

Skin: dermoid sinus

Synonym(s): Pilonidal sinus, pilonidal cyst, dermoid cyst

Contributor(s): Kyle Braund, David Scarff

Introduction

  • Cause: genetic epidermo-neural tube defect.
  • Signs: Rhodesian Ridgeback most commonly affected.
  • Varies from minor to severe, with neurologic signs.
  • Diagnosis: breed, clinical signs, sinography.
  • Treatment: minor problem, no treatment necessary; major problems require surgery.
  • Prognosis: good.

Pathogenesis

Etiology

  • Genetic defect.

Pathophysiology

  • Neural tube defect resulting from incomplete separation of epidermis and neural tube.
  • Infection may cause meningitis.
  • Indentation of skin extending as a sac into the dermis.
  • May extend through neural canal to dura mater.

Diagnosis

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Treatment

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Prevention

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Outcomes

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Hillbertz N H & Andersson G (2006) Autosomal dominant mutation causing the dorsal ridge predisposes for dermoid sinus in Rhodesian ridgeback dogsJSAP 47 (4), 184-188 PubMed.
  • Hillbertz N H (2005) Inheritance of dermoid sinus in the Rhodesian ridgeback. JSAP 46 (2), 71-74 PubMed.
  • Burrow R D (2004) A nasal dermoid sinus in an English bull terrier. JSAP 45 (11), 572-574 PubMed.
  • Anderson D M & White R A (2002) Nasal dermoid sinus cysts in the dog. Vet Surg 31 (4), 303-308 PubMed.
  • Cornegliani L, Jommi E & Vercelli A (2001) Dermoid sinus in a golden retriever. JSAP 42 (10), 514-516 PubMed.
  • Tshamala M & Moens Y (2000) True dermoid cyst in a Rhodesian Ridgeback. JSAP 41 (8), 352-3 PubMed.
  • Booth M J (1998) Atypical dermoid sinus in a Chow Chow dog. J S Afr Vet Assoc 69 (3), 102-104 PubMed.
  • Mann G E & Stratton J (1966) Dermoid sinus in the Rhodesian Ridgeback. JSAP 7 (10), 631-42 PubMed.

Other sources of information

  • Braund K G (2002)Developmental Disorders. In:Clinical Neurology in Small Animals - Localization, Diagnosis and Treatment.Ed K G Braund. Ithaca: International Veterinary Information Service (www.ivis.org). Document no. B0217.0202.

 


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