This contrast-enhanced,coronal (frontal view) CT reconstruction shows complete absence of thyroid tissue in the expected region in the lower neck. This patient only has lingual thyroid tissue. The thyroid gland develops near the foramen cecum of the tongue and normally descends along a tract called the thyroglossal duct to the lower neck. Rarely,this normal descent does not occur and thyroid tissue remains in the tongue,but remnants of thyroid tissue and the duct itself may occur anywhere along the tract. Often,however,no thyroid tissue is present in the lower neck,only in the tongue base,as in this case | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Living Art Enterprises |
Bildgröße: | 4200 px × 4200 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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