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胸腺瘤的病理改变

来源:华人健康网 | 发布时间:2010-07-23 21:37:37 | www.chinesejk.com

  【病理改变】

  病理学上胸腺瘤以占80%以上细胞成分为名称。分为上皮细胞型和上皮细胞淋巴细胞混合型。单纯从病理形态学上很难区分良性或恶性胸腺瘤,根据临床表现,手术时肉眼观察所见和病理形态特点,以侵袭性和非侵袭性胸腺瘤分类更为恰当。但习惯上常称为良性和恶性胸腺瘤。

  胸腺廇良恶性鉴别需要依据临床表现和外科手术时的发现。外科手术时应当注意

  ①肿瘤是否有完整的包膜;

  ②肿瘤是否呈侵袭性生长;

  ③有无远处转移和胸腔内种植;

  ④显微镜下细胞形态的异形,综合分析才能得出正确的结论。

  手术时肿瘤有完整的纤维包膜,肿瘤在包膜内生长,与周围脏器无粘连浸润,手术容易摘除的,为良性或非侵袭性胸腺瘤。当肿瘤侵出包膜,侵犯周围脏器或组织(心包、胸膜、肺和血管等),处科手术不能切除或不能完全切除的,或术时发现已有胸内种植或胸膜转移,则为恶性或侵袭性胸腺瘤。

(编辑:刘一鸣 )

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