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Old 05-14-2015
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Default Help with question

Help with the following questions, whats the answer and why are the other choices wrong?

Q: A 3 month old male undergoes surgery for a sublingual mass that seems to impair his breathing. The infant is brought to the ER several weeks after the surgery with lethargy, feeding problems, constipation, and dry skin. Of the following, which embryological processes most likely failed in this patient?

A: Differentiation
B: Migration
C: Fusion
D:Apoptsois
E: Proliferation
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Old 05-14-2015
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Quote:
Originally Posted by Ronaldo7 View Post
Help with the following questions, whats the answer and why are the other choices wrong?

Q: A 3 month old male undergoes surgery for a sublingual mass that seems to impair his breathing. The infant is brought to the ER several weeks after the surgery with lethargy, feeding problems, constipation, and dry skin. Of the following, which embryological processes most likely failed in this patient?

A: Differentiation
B: Migration
C: Fusion
D:Apoptsois
E: Proliferation
migration?
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Old 05-14-2015
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they are taking about a lingual thyroid. This is ectopic thyroid tissue located beneath the tongue. It can cause symptoms of hyperthyroidism. When removed it may cause symptoms of hypothyroidism. The cause of this lingual thyroid is a
defect in migration.
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Old 05-14-2015
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its talking about failure of migration of thyroid tissue from the base of tongue to its actual location in the neck..

The sublingual mass found in the patient could have just been a thyroglossal cyst however it was the only thryoid tissue he had and because it had not migrated, after surgery he became hypothyroid (hence his symptoms)
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Quote:
Originally Posted by mk09 View Post
its talking about failure of migration of thyroid tissue from the base of tongue to its actual location in the neck..

The sublingual mass found in the patient could have just been a thyroglossal cyst however it was the only thryoid tissue he had and because it had not migrated, after surgery he became hypothyroid (hence his symptoms)
Thank you for a great explanation! Why aren't the other choices correct, is what I'm having difficulty explaining! And i need to give a presentation on this question
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Quote:
Originally Posted by Ronaldo7 View Post
Thank you for a great explanation! Why aren't the other choices correct, is what I'm having difficulty explaining! And i need to give a presentation on this question
because thats the normal embryological process involved in thyroid developtment. the others : apoptoses, differentiation etc have no role to play. They may be involved in other embryological processes but not this one so thats why its only migration and not the other options
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