ما هو السرطان ؟ و ما معنى ورم خبيث و ورم حميد؟

15 سبتمبر 2013

السرطان هو مجموعة من الأمراض التي تتميز خلاياها بالعدائية وهو النمو والانقسام
من غير حدود، وقدرة هذه الخلايا المنقسمة على غزو أنسجة مجاورة وتدميرها، أو الانتقال إلى أنسجة بعيدة في عملية يطلق عليها اسم النقيلة.

وهذه القدرات هي صفات الورم الخبيث على عكس الورم الحميد، والذي يتميز بنمو محدد وعدم القدرة على الغزو وليس له القدرة على الانتقال أو النقلية. كما يمكن تطور الورم الحميد إلى سرطان خبيث في بعض الأحيان.

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