The tumors are frequently multicentric, and a thyroid scan does not always reflect areas of involvement.

肿瘤呈多中心，甲状腺扫描并不总能显示病变部位。

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The tumors are frequently multicentric, and a thyroid scan does not always reflect areas of involvement.

肿瘤呈多中心，甲状腺扫描并不总能显示病变部位。

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