Now the vast majority of tumors of the heart are actually secondary, meaning that a tumor developed somewhere else in the body, metastasized, and spread to the heart.
One relatively unique feature is that they metastasize through the cerebrospinal fluid in a process called drop metastasis where the tumor spreads to the base of the spine.
Doctors utilize a system which uses the letters T, N, and M to describe a tumor's size, its presence in the immune system's lymph nodes, and whether it has metastasized, or spread, to other organs.
医生使用一种系统,用字母 T、N 和 M 分别描述肿瘤的大小、在免疫系统淋巴结中的存在情况、以及是否或扩散到其他器官。
Malignant tumors can either be primary which is when they arise from the bone cells, or secondary, which is when a tumor developed somewhere else in the body, metastasized, and spread to the bones.
The malignant cells then invade surrounding tissues like the salivary glands, muscle, and even get into the blood and lymphatic systems, and metastasize, or travel, to other areas of the body.