Cancer Information Library
RX Cancer A-Z
Browse indexed cancer guides by cancer type, body site, oncology term, or first letter without loading the complete library at once.
44 matching article(s).
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O’Brien Granuloma
O'Brien granuloma is a condition that affects the ear, particularly the external auditory canal. In this article, we will provide you with simplified explanations…
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Ocular Chloroma
Ocular chloroma is a rare eye condition that can affect various parts of the eye. In this article, we will provide simple and clear…
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Ocular (Eye) MALT Lymphoma
Ocular MALT Lymphoma is a type of cancer that can affect the eye. In this article, we will break down the key aspects of…
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Odontoma
An odontoma is a benign (non-cancerous) growth made from the same hard tissues that build a normal tooth: enamel, dentin, cementum, and sometimes pulp.…
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Olfactory Groove Meningioma
Olfactory Groove Meningioma is a type of brain tumor that grows near the frontal lobes of the brain, close to the olfactory groove, which…
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Oligodendroglioma
Oligodendroglioma is a type of brain tumor that starts in cells called oligodendrocytes, which are responsible for producing myelin, a substance that insulates nerve…
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Optic Nerve Glioma
An optic nerve glioma is a tumor that grows from the support cells of the optic pathway, which is the “wire” that carries visual…
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Optic Nerve Sheath Meningioma (ONSM)
Optic nerve sheath meningioma is a slow-growing, usually benign (non-cancerous) tumor that starts in the thin lining (the meninges) that wraps around the optic…
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Optic Pathway Glioma
An optic pathway glioma is a type of brain tumor that arises from the glial cells—supportive cells in the nervous system—along the visual pathway,…
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Oral Cystic Papilloma
Oral cystic papilloma is a mouth condition that can cause discomfort and concern. In this article, we'll break down the types, causes, symptoms, diagnostic…
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Oral Cystic Papilloma
Oral Cystic Papilloma is a mouth condition that can cause discomfort and concerns for those affected. In this article, we will break down what…
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Oral Hemangiomas – Causes, Symptoms, Treatment
Oral Hemangiomas (OHs) are benign tumors that develop due to endothelial cell proliferation and occur in and around the oral cavity. While 60 to…
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Oral Submucous Fibrosis
Oral submucous fibrosis (OSF) is a chronic, potentially debilitating condition that affects the oral cavity. It is characterized by the progressive formation of fibrous…
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Orbital Chloroma (Myeloid Sarcoma of the Orbit)
Orbital chloroma is a solid tumor made of immature white blood cells (myeloid blasts) that grows inside the eye socket (the orbit). Doctors also…
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Orbital Granular Cell Tumor (GCT)
An orbital granular cell tumor is a rare growth that starts from the support cells that wrap around nerves (called Schwann cells) and develops…
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Orbital Infantile Hemangioma – Causes, Symptoms, Treatment
Strawberry Hemangioma/Capillary hemangioma of infancy are the most common benign orbital neoplasms in children. Historically, they have been referred to by many names such as…
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Orbital Lipodermoid
An orbital lipodermoid (also called a dermolipoma) is a benign, non-cancerous lump made of normal fat and skin-type tissue that grew in the wrong…
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Orbital Lymphangioma (Orbital Lymphatic Malformation)
An orbital lymphangioma is a mass made of abnormal lymphatic channels inside the eye socket (the orbit) and sometimes the eyelids. Doctors now prefer…
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Orbital Lymphoma
Orbital lymphoma is a cancer of the immune system that grows in or around the eye. The “orbit” is the bony space that holds…
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Orbital Meningiomas
Orbital meningiomas are growths that start from the thin covering layers around the brain and the optic nerve. These covering layers are called the…
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Orbital Mesenchymal Chondrosarcoma
Mesenchymal chondrosarcoma is a very rare, fast-growing cancer that forms cartilage-like tissue. “Mesenchymal” means it starts from primitive, early connective-tissue cells. “Chondro-” means cartilage.…
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Orbital Neurofibroma
An orbital neurofibroma is a benign (non-cancerous) tumor that grows from the sheath of a nerve inside the orbit, which is the bony socket…
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Orbital Pheochromocytoma
Orbital pheochromocytoma is an extremely rare tumor that shows up in the eye socket (the “orbit”). Most pheochromocytomas start inside the adrenal glands and…
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Orbital Plasmacytoma
An orbital plasmacytoma is a mass of abnormal plasma cells that grows in or around the eye socket (the orbit). Plasma cells are white…
