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A chordoma is a rare type of cancerous tumor that can occur anywhere along the spine, from the base of the skull to the tailbone. Chordomas grow slowly, gradually extending into the bone and soft tissue around them. They often recur after treatment, and in about 40 percent of cases the cancer spreads (metastasizes) to other areas of the body, such as the lungs. Approximately half of all chordomas occur at the base of the spine (sacrum), about one third occur in the base of the skull (occiput), and the rest occur in the cervical (neck), thoracic (upper back), or lumbar (lower back) vertebrae of the spine.
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The normal liver cells or hepatocytes contain lipid droplets, more frequent near the central vein of hepatic lobules, that can be demonstrated using osmium tetroxide as fixative. In steatosis or fatty liver disease, the amount of lipid droplets is pathologically very increased.
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Poorly cohesive gastric carcinoma (dyscohesive carcinoma, carcinoma with a lack of intercellular connections) is a malignant tumor of epithelial origin, characterized by diffuse distribution of tumor cells, isolated from each other or in small groups.
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Dysgerminoma Site: Ovary: A dysgerminoma is a type of germ cell tumor; it usually is malignant and usually occurs in the ovary.
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