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| ==Teratoma== | | ==Teratoma== |
| Three types:
| | {{Main|Teratoma}} |
| #Mature (benign) - common.
| | *May be benign or malignant. |
| #Immature (malignant).
| | *Skin component ''only'' called "dermoid". |
| #Monodermal (highly specialized).
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| ===Specialized teratomas===
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| *[[Struma ovarii]] ([[thyroid tumour]]). | |
| ** Thyroid tissue - colloid is seen.
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| *[[Carcinoid]] - rare.
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| ** 'Typical neuroendocrine appearance' - nuclei with stippled chromatin (salt-and-pepper chromatin).
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| ==Dysgerminoma== | | ==Dysgerminoma== |