asmi
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branchial cyst or sinus.....is from which pharyngeal arch/pouch /cleft ?
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| crista
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from 1,2,3 brahial clefts (spaces between brachial arches,that normally degenerate)
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| asmi
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2nd pharyngeal cleft
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| Bela
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Hmm, Asmi correct me if I am wrong but I read that 2nd through 4th clefts are what form the cervical sinuses. And a persistent cervical sinus is what leads to a branchial cyst in the neck. Doesn't this mean that it comes from 2,3,4 clefts????
By the way, the 1st cleft gives rise to EXTERNAL AUDITORY MEATUS.
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| bobby
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is only the second cleft that proliferates through 3 and 4 to meet the epicardial ridge, obliterating 3 and 4 cleft. failure to do so == cervical sinus or fistula
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