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Thyroid gland
Miscellaneous non-neoplastic disorders
Black / pigmented thyroid

Reviewer: Shahidul Islam, M.D., Ph.D. (see Reviewers page)
Revised: 10 June 2013, last major update March 2009
Copyright: (c) 2003-2013, PathologyOutlines.com, Inc.

General
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Diagnosis
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Case reports
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Treatment
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Gross description
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Gross images
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Thyroid gland with dark brown / black pigment at autopsy
Micro description
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Micro images
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Various images

Minocycline-induced pigmentation
Contributed by Dr. Mark R. Wick

Fig 1: nodule uninvolved by pigmentation represents carcinoma
Fig 2: tumor (no pigment) and pigmented non-tumorous follicles (arrow)
Fig 3: pigmented follicular epithelial cells and macrophages
Fig 4: pigment is negative for iron stain
Cytology description
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Positive stains
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Electron microscopy description
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Differential diagnosis
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End of Thyroid gland > Miscellaneous non-neoplastic disorders > Black / pigmented thyroid


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