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NBME 20 Answers

nbme20/Block 3/Question#7

A 10-year-old boy has a palpable mass in the ...

Endoderm of foramen caecum

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submitted by xxabi(91),

This is a thyroglossal duct cyst. The tyroglossal duct may persist and result in a thyroglossal duct cyst (occurring in midline near hyoid bone or at the base of the tongue), thus will classically move up with swallowing or tongue protrusion.

The foramen cecum (of the tongue) is the normal remnant of the thyroglossal duct