Info-Junction.Net

Most cases of bone marrow cancer come from cancer that spreads to the bone from another organ. This is known as secondary bone cancer. When these cancers are examined under a microscope, they resemble the tissue they came from (i.e., breast, prostate, lung, etc).

Primary bone cancer is cancer that forms in cells of the bone. Some types of primary bone cancer are osteosarcoma, chondrosarcoma, Ewing's sarcoma and malignant fibrous histiocytoma.

Other kinds of bone marrow cancers that start in the blood forming cells of the bone marrow are as follows:
Leukemia – when bone marrow produces abnormal white blood cells

Lymphomas - which more often start in lymph nodes, but can sometimes start in bone marrow

Multiple Myeloma – cancer that develops from the plasma cells of the bone marrow

Bone marrow is the spongy, soft tissue contained inside most bones. This tissue is made up of immature cells, which are known as stem cells, which develop into various types of blood cells such as: red blood cells, which help in carrying oxygen throughout the body; white blood cells, which are part of the immune system and therefore help in fighting infection; and platelets, which help in clotting blood. As red blood cell production requires iron, the body usually stores a large portion of its supply of iron in the bone marrow. Bone marrow cancer occurs when the cells that form blood become cancerous.

What are the Various Kinds of Bone Marrow Cancer?

Usually bone marrow cancer occurs due to cancer spreading to the bone from some other organ, when it is referred to as secondary bone cancer. On examination under the microscope, these cancers bear a resemblance to the original tissue they came from, such as the lung, breast, prostate, and so on.

Primary bone marrow cancers, on the other hand, are the type that occurs in the bone marrow cells that form blood, and these are:

Multiple Myeloma: This is a type of bone marrow cancer that affects the plasma cells, which are a kind of white blood cells that occur in the bone marrow. The disease occurs due to the plasma cells growing abnormally. Normally, plasma cells produce antibodies. So, when these malignant or abnormal plasma cells divide and multiply rapidly, without order or control, as is the case in cancerous cells, it results in the production of huge amounts of abnormal antibodies, which accumulate in the blood as well as the urine. With the growth of the plasma cell tumor, the surrounding bone is also destroyed. These effects result in an impaired immune system, damage to the kidneys, and pain in the bones. The disease is referred to as multiple myeloma since it can affect multiple sites of the body where bone marrow occurs.

Leukemia: This disease occurs when the bone marrow produces white blood cells that are abnormal. Leukemia is a term that defines 4 different types of diseases: Acute Lymphocytic Leukemia, or ALL; Acute Myelogenous Leukemia, or AML; Chronic Lymphocytic Leukemia, or CLL; and Chronic Myelogenous Leukemia, or CML.

Acute myelogenous leukemia and acute lymphocytic are both made up of blast cells, referred to as myeloblasts or lymphoblasts. The term ‘acute’ is indicative of the disease progressing rapidly, in the absence of treatment. Chronic leukemia either does not have any blast cells or they are few in number, and it progresses comparatively slowly.

Lymphoma: This usually affects the lymphatic system, but sometimes can begin in the bone marrow. For example, Hodgkin lymphoma, which usually affects the lymph nodes, but can also affect the bone marrow.


thanks

Toronto immigration lawyers

There are two types of bone marrow: red marrow (consisting mainly of hematopoietic tissue) and yellow marrow (consisting mainly of fat cells). Red blood cells, platelets and most white blood cells arise in red marrow. Both types of bone marrow contain numerous blood vessels and capillaries.

At birth, all bone marrow is red. With age, more and more of it is converted to the yellow type; only around half of adult bone marrow is red. Red marrow is found mainly in the flat bones, such as the hip bone, breast bone, cranium, ribs, vertebrae and shoulder blades, and in the cancellous ("spongy" material at the epiphyseal ends of long bones such as the femur and humerus. Yellow marrow is found in the medullary cavity, the hollow interior of the middle portion of long bones.

In cases of severe blood loss, the body can convert yellow marrow back to red marrow to increase blood cell production.

Thanks,

sanyo voice recorders

Usually bone marrow cancer occurs due to cancer spreading to the bone from some other organ, when it is referred to as secondary bone cancer. On examination under the microscope, these cancers bear a resemblance to the original tissue they came from, such as the lung, breast, prostate, and so on.
Primary bone marrow cancers, on the other hand, are the type that occurs in the bone marrow cells that form blood, and these are:
Multiple Myeloma: This is a type of bone marrow cancer that affects the plasma cells, which are a kind of white blood cells that occur in the bone marrow. The disease occurs due to the plasma cells growing abnormally. Normally, plasma cells produce antibodies. So, when these malignant or abnormal plasma cells divide and multiply rapidly, without order or control, as is the case in cancerous cells, it results in the production of huge amounts of abnormal antibodies, which accumulate in the blood as well as the urine. With the growth of the plasma cell tumor, the surrounding bone is also destroyed. These effects result in an impaired immune system, damage to the kidneys, and pain in the bones. The disease is referred to as multiple myeloma since it can affect multiple sites of the body where bone marrow occurs.
Leukemia: This disease occurs when the bone marrow produces white blood cells that are abnormal. Leukemia is a term that defines 4 different types of diseases: Acute Lymphocytic Leukemia, or ALL; Acute Myelogenous Leukemia, or AML; Chronic Lymphocytic Leukemia, or CLL; and Chronic Myelogenous Leukemia, or CML.
Acute myelogenous leukemia and acute lymphocytic are both made up of blast cells, referred to as myeloblasts or lymphoblasts. The term ‘acute’ is indicative of the disease progressing rapidly, in the absence of treatment. Chronic leukemia either does not have any blast cells or they are few in number, and it progresses comparatively slowly.
Lymphoma: This usually affects the lymphatic system, but sometimes can begin in the bone marrow. For example, Hodgkin lymphoma, which usually affects the lymph nodes, but can also affect the bone marrow.


thanks,


Replica Handbags

Prada Handbags

LV Handbags