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Spindle-cell hemangioendothelioma [3]) is a vascular tumor that was first described in 1986 by Sharon Weiss, M.D., [4] and commonly presents in a child or young adult who develops blue nodules of firm consistency on a distal extremity.
A hemangioma or haemangioma is a usually benign vascular tumor derived from blood vessel cell types. The most common form, seen in infants, is an infantile hemangioma, known colloquially as a "strawberry mark", most commonly presenting on the skin at birth or in the first weeks of life. A hemangioma can occur anywhere on the body, but most ...
In neurobiology, spindle cell refers to: Spindle neuron, also known as a von Economo neuron; In general medicine, a spindle cell may refer to the spindle-shaped cells that are found in certain types of tumor: Inflammatory fibroid polyp; Pigmented spindle cell nevus; Spindle cell carcinoma; Spindle cell lipoma; Spindle cell sarcoma
A vascular tumor is a vascular anomaly where a tumor forms from cells that make blood or lymph vessels; a soft tissue growth that can be either benign or malignant. [1] Examples of vascular tumors include hemangiomas, hemangioendotheliomas, Kaposi's sarcomas, angiosarcomas, and hemangioblastomas. An angioma refers to any type of benign vascular ...
Spindle cell sarcoma is a type of connective tissue cancer. The tumors generally begin in layers of connective tissue , as found under the skin, between muscles, and surrounding organs, and will generally start as a small, inflamed lump, which grows in size.
Differential diagnosis includes vascular malformation, angioma, pyogenic granuloma, angiosarcoma, epithelioid hemangioendothelioma, Kaposi’s sarcoma, and other more rare vascular tumors. Three forms of intravascular papillary endothelial hyperplasia exist: the primary or pure form, the secondary or mixed form, and the extravascular form.
Epithelioid hemangioendothelioma, a vascular tumour occurring in the lining of blood vessels; Epithelioid blue nevus, a melanocytic nevus; Epithelioid sarcoma-like hemangioendothelioma, a group of vascular neoplasms; Epithelioid and spindle-cell nevus, a benign melanocytic lesion affecting the epidermis and dermis; Epithelioid hemangioma
Pericytes envelop the endothelial cells, [9] which can exhibit a combination of plump and flat cells without pleomorphism or mitotic patterns. [10] Immunohistochemically, an microvenular hemangioma's endothelial cells show positive staining for CD31, CD34, and factor VIII, while its pericytes show positive staining for SMA.