Dermoid Sinus
Dermoid sinus is a congenital neural tube defect resulting in a tubular skin tract along the dorsal midline, most commonly seen in Rhodesian Ridgebacks.
Detailed Description
Dermoid sinus is a developmental defect caused by incomplete separation of the skin and neural tube during embryogenesis, resulting in a tubular tract that may extend from the skin surface to deeper tissues, sometimes reaching the spinal cord. It can become infected, causing pain, abscesses, or neurological deficits if the spinal cord is involved.
Common Symptoms
- Palpable tubular tract along the dorsal midline
- Swelling
- Discharge
- Pain
- Recurrent infections
- Possible neurological signs
Management Options
- Surgical excision
- Antibiotics for infection
Frequently Asked Questions
Is dermoid sinus always visible at birth?
Not always; some may become apparent as the puppy grows.
Can affected puppies live normal lives?
Yes, if surgically treated early and no neurological damage has occurred.
Is there a DNA test for dermoid sinus?
No, but research is ongoing.
Should affected dogs be bred?
No, to reduce prevalence in the breed.
Is the ridge itself a health problem?
The ridge is not a problem, but it is genetically linked to dermoid sinus.
Condition Details
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Typical Age of Onset
Birth to a few months old (congenital)
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Testing Available
No
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Diagnosing Methods
Physical examination; Probing of tract; Ultrasonography; MRI/CT for deep or ambiguous cases
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Preventative Measures
Careful breeding practices; Avoid breeding affected dogs
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Related Conditions
Follicular cysts, Abscesses, Other congenital spinal defects