Lymphoma of the testicle is a cancer of immune cells called lymphocytes that is found in the testicle. When the lymphoma starts in the testicle, it is called primary testicular lymphoma. Almost all primary testicular lymphomas are diffuse large B-cell lymphoma (DLBCL). Testicular lymphoma is the most common cancer of the testicle in men over 60. …
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Germ cell neoplasia in situ, or GCNIS, is a precancerous change in the testicle. In GCNIS, abnormal germ cells grow inside the small tubes of the testicle where sperm are made, but they have not broken out into the surrounding tissue. GCNIS is not cancer yet. However, it is the starting point for most testicular …
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A teratoma is a tumor that grows from germ cells, the cells that normally form eggs or sperm. Germ cells can develop into almost any kind of tissue. For this reason, a teratoma can contain a surprising mix of tissues, such as skin, hair, fat, cartilage, bone, and even brain tissue. Teratoma is one of …
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Lipoblastoma is a noncancerous tumor made of young fat cells. It is almost always found in babies and young children, and most are under 3 years old when it is diagnosed. Parents usually notice a soft, painless lump under the skin of an arm, a leg, or the trunk. The lump can grow quickly, which …
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Metastasis means cancer has spread from its starting point to another part of the body. Doctors call the new tumor a metastasis. They also say that the cancer has metastasized. This article explains what metastasis is, how cancer spreads, where it goes, how pathologists identify it, and what your report may say. What is metastasis? …
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Bone remodeling is the process the body uses to renew its bones constantly. Old or damaged bone is removed by cells called osteoclasts, and new bone is laid down in its place by cells called osteoblasts. This process continues throughout life. It keeps bones strong, repairs small cracks, and helps regulate blood calcium levels. Bone …
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CD99 is a protein found on the surface of many types of cells. Pathologists test for CD99 to help identify small, round-cell tumors, especially Ewing sarcoma. Almost all Ewing sarcomas are strongly CD99-positive. Many other tumors are also positive, so pathologists never use CD99 alone to make a diagnosis. CD99 is a test result, not …
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Conventional osteosarcoma is the most common type of osteosarcoma, a cancer in which the tumor cells make new bone. It is a type of sarcoma, a cancer that starts in the body’s supporting and connecting tissues. Conventional osteosarcoma starts in bone, most often near the knee or shoulder, and makes up about 8 or 9 …
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After a biopsy, swab, or blood test, many people want to know how long results will take. Some test results come back the same day, while others take several weeks. Timing depends on the test type, the laboratory, and whether the initial review requires additional testing. A pathologist or laboratory professional must also review and …
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High-grade surface osteosarcoma is a very rare type of bone cancer that grows on the bone’s surface. It is a type of osteosarcoma, a group of cancers in which the tumor cells make new bone. It accounts for fewer than 1% of all osteosarcomas. “High grade” means the tumor cells look very abnormal under the …
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