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Granuloma; Picture of a granuloma (without necrosis) as seen through a microscope on a glass slide: The tissue on the slide is stained with two standard dyes (hematoxylin: blue, eosin: pink) to make it visible. The granuloma in this picture was found in a lymph node of a patient with a Mycobacterium avium infection. Specialty: Pathology
Cancer cells are cells that divide continually, forming solid tumors or flooding the blood or lymph with abnormal cells. Cell division is a normal process used by the body for growth and repair. A parent cell divides to form two daughter cells, and these daughter cells are used to build new tissue or to replace cells that have died because of ...
Human eosinophilic granuloma is characterized by abnormal proliferation of Langerhans cells (LCs). LCs are antigen-presenting cells derived from dendritic cells. In humans, eosinophilic granulomas are considered as a benign tumors that occurs mainly in children and adolescents. EG is a quite rare condition, and its incidence is higher in white ...
A myeloid sarcoma (chloroma, granulocytic sarcoma, [1]: 744 extramedullary myeloid tumor) is a solid tumor composed of immature white blood cells [2] called myeloblasts. A chloroma is an extramedullary manifestation of acute myeloid leukemia; in other words, it is a solid collection of leukemic cells occurring outside of the bone marrow.
A giant cell (also known as a multinucleated giant cell, or multinucleate giant cell) is a mass formed by the union of several distinct cells (usually histiocytes), often forming a granuloma. [ 1 ] Although there is typically a focus on the pathological aspects of multinucleate giant cells (MGCs), they also play many important physiological roles.
The inflammatory process that creates these cells often leads to a foreign body granuloma. The human body goes through several steps when exposed to foreign biomaterial including acute and chronic inflammation, and formation of new tissue and a fibrous capsule along the surface of the implantation. [1]
A doctor likely can diagnose a pyogenic granuloma based on its appearance, and might perform a biopsy to make a more accurate diagnosis. A biopsy also helps rule out malignant (cancerous) medical conditions that can cause a similar kind of growth. These conditions include squamous-cell carcinoma, basal-cell carcinoma, and melanoma. [citation ...
Lymphomatoid granulomatosis (LYG or LG) is a very rare lymphoproliferative disorder first characterized in 1972. [1] Lymphomatoid means lymphoma-like and granulomatosis denotes the microscopic characteristic of the presence of granulomas with polymorphic lymphoid infiltrates and focal necrosis within it.