02-27-2010, 05:39 PM
Yes, branchial cleft cyst in most cases found anterior to SCM or deep to it. One more possible location - lateral neck. With no relationship to SCM. Most of online sources can't show location posterior to SCM, except one
http://emedicine.medscape.com/article/382803-imaging
under Findings
Third branchial cleft cysts lie beneath or posterior to the sternocleidomastoid muscle, within the posterior triangle of the neck.
--> Looks like cystic hygroma.
Yes, cystic hygroma common location the posterior triangle of the neck, but from LT side
and more:
1. Cystic hygromas are strongly associated with Turner syndrome, which causes an abnormal phenotype in affected girls. We have boy with no other abnormalities
2. cavernous lymphatic spaces communicate and grow to form large cysts that can infiltrate the surrounding tissue. We have unilocular.
http://emedicine.medscape.com/article/402757-overview
3.Rarely they appear as solitary cysts.
http://www.uhrad.com/pedsarc/peds053.htm
--> ruling out cystic hygroma.
Now it's up to you what to choose.
There is one way to find out the best answer. Take NBME 1, answer 199 questions absolutely right, and last 200-th question will be your correct answer, may be. Who knows.
http://emedicine.medscape.com/article/382803-imaging
under Findings
Third branchial cleft cysts lie beneath or posterior to the sternocleidomastoid muscle, within the posterior triangle of the neck.
--> Looks like cystic hygroma.
Yes, cystic hygroma common location the posterior triangle of the neck, but from LT side
and more:
1. Cystic hygromas are strongly associated with Turner syndrome, which causes an abnormal phenotype in affected girls. We have boy with no other abnormalities
2. cavernous lymphatic spaces communicate and grow to form large cysts that can infiltrate the surrounding tissue. We have unilocular.
http://emedicine.medscape.com/article/402757-overview
3.Rarely they appear as solitary cysts.
http://www.uhrad.com/pedsarc/peds053.htm
--> ruling out cystic hygroma.
Now it's up to you what to choose.
There is one way to find out the best answer. Take NBME 1, answer 199 questions absolutely right, and last 200-th question will be your correct answer, may be. Who knows.