| D008854 |
Microscopy, Electron |
Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen. |
Electron Microscopy |
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| D009383 |
Neoplasms, Vascular Tissue |
Neoplasms composed of vascular tissue. This concept does not refer to neoplasms located in blood vessels. |
Blood Vessel Tumors,Vascular Tissue Neoplasms,Blood Vessel Tumor,Neoplasm, Vascular Tissue,Tumor, Blood Vessel,Tumors, Blood Vessel,Vascular Tissue Neoplasm |
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| D003937 |
Diagnosis, Differential |
Determination of which one of two or more diseases or conditions a patient is suffering from by systematically comparing and contrasting results of diagnostic measures. |
Diagnoses, Differential,Differential Diagnoses,Differential Diagnosis |
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| D005918 |
Glomus Tumor |
A blue-red, extremely painful vascular neoplasm involving a glomeriform arteriovenous anastomosis (glomus body), which may be found anywhere in the skin, most often in the distal portion of the fingers and toes, especially beneath the nail. It is composed of specialized pericytes (sometimes termed glomus cells), usually in single encapsulated nodular masses which may be several millimeters in diameter (From Stedman, 27th ed). CHEMODECTOMA, a tumor of NEURAL CREST origin, is also sometimes called a glomus tumor. |
Glomangioma,Glomangiomas,Glomus Tumors,Tumor, Glomus,Tumors, Glomus |
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| D006393 |
Hemangiopericytoma |
A tumor composed of spindle cells with a rich vascular network, which apparently arises from pericytes, cells of smooth muscle origin that lie around small vessels. Benign and malignant hemangiopericytomas exist, and the rarity of these lesions has led to considerable confusion in distinguishing between benign and malignant variants. (From Dorland, 27th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1364) |
Hemangiopericytomas |
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| D006801 |
Humans |
Members of the species Homo sapiens. |
Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man |
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