nTHYROGLOSSAL DUCT CYSTS

nTHYROGLOSSAL DUCT CYSTS - nTHYROGLOSSAL DUCT CYSTS Both...

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nTHYROGLOSSAL DUCT CYSTS Both cysts and fistulas can develop along the course of the thyroglossal duct 81 (Fig. 20). These cysts are the most common anomaly in thyroid development seen in clinical practice. 82 Normally, the thyroglossal duct becomes obliterated early in embryonic life, but occasionally it persists as a cyst. Such lesions occur equally in males and females. They are seen at birth in about 25% of cases; most appear in early childhood; and the rest, about one third, become apparent only after age 30 years. 83 Cysts usually appear in the midline or just off the midline between the isthmus of the thyroid and the hyoid bone. They commonly become repeatedly infected and may rupture spontaneously. When this complication occurs, a sinus tract or fistula persists. Removal of a thyroglossal cyst or fistula requires excision of the central part of the hyoid bone and dissection of the thyroglossal tract to the base of the tongue (the Sistrunk procedure) if recurrence is to be minimized. This procedure is necessary because the thyroglossal duct is intimately associated
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nTHYROGLOSSAL DUCT CYSTS - nTHYROGLOSSAL DUCT CYSTS Both...

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