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Thyroid gland
Congenital anomalies
Thyroglossal duct / cyst

Reviewer: Shahidul Islam, M.D., Ph.D. (see Reviewers page)
Revised: 5 June 2013, last major update March 2009
Copyright: (c) 2003-2013, PathologyOutlines.com, Inc.

General
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Clinical features
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Prognostic factors
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Case reports
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Treatment
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Drawings
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Pathway of the thyroglossal duct
Clinical images
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Thyroglossal duct cysts
Thyroglossal duct in cadaver
Gross description
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Gross images
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Thyroglossal duct cyst (AFIP)
Micro description
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Micro images
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Sagittal section of 7 1/2 week embryo: arrows indicate thyroglossal tract, A is arytenoid cartilage, C is cricoid cartilage, E is epiglottis, FC is foramen cecum, H is hyoid bone, P is pharynx, T is tongue, TC is thyroid cartilage, TG is thyroid gland
Respiratory epithelium

Follicular adenoma
attached to hyoid bone
Papillary carcinoma
Squamous cell carcinoma
Contributed by Dr. Mark R. Wick
Images from AFIP:
Lining of ciliated and stratified squamous epithelium
Papillary changes of nodular hyperplasia

Cytology images
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With papillary carcinoma
Differential diagnosis
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End of Thyroid gland > Congenital anomalies > Thyroglossal duct / cyst


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