[Verse 1] When truncus shows its face, it never walks alone A constellation of defects, carved into the bone VSD beneath the valve, thirteen to fifteen wide Subarterial gateway where the blood collides [Chorus] Six companions traveling together VSD and arches, branches weathered Patent holes and valve mutations DiGeorge deletions, coronations Never solo, always paired Truncus brings the crew prepared [Verse 2] Thirty percent flip the arch to the rightward side Mirror-image branching where the vessels ride Left brachiocephalic, right carotid stream Right subclavian completing the aberrant scheme [Chorus] Six companions traveling together VSD and arches, branches weathered Patent holes and valve mutations DiGeorge deletions, coronations Never solo, always paired Truncus brings the crew prepared [Bridge] Three millimeter foramen, left to right it flows Interrupted arch in ten percent it shows Tricuspid valve competent, but watch for malformation Twenty-two-q-eleven brings the syndrome's devastation [Verse 3] Small thymus whispers of the chromosome deleted Hypocalcemia, immunity depleted Palatal abnormalities in thirty-five percent Coronary anomalies need surgical assessment [Chorus] Six companions traveling together VSD and arches, branches weathered Patent holes and valve mutations DiGeorge deletions, coronations Never solo, always paired Truncus brings the crew prepared [Outro] Plan the operation with each variant in mind The truncus constellation, intricately designed
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