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.
34 matching article(s).
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Racemose Hemangioma
A racemose hemangioma (RH) is a fast-flow vascular malformation, not a true tumor. Doctors also call it a retinal or iris arteriovenous malformation (AVM)…
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RAS- Associated Autoimmune Leukoproliferative Disorder (RALD)
RAS-associated autoimmune leukoproliferative disorder (RALD) is a rare immune-system disorder caused by somatic (acquired) “gain-of-function” mutations in the genes NRAS or KRAS inside blood-forming…
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Reactive (Benign) Monocytosis
Monocytes are one of the five types of white blood cells. They patrol the bloodstream, move into tissues when needed, and become macrophages or…
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Reactive Bilateral Lymphadenopathy
Reactive Bilateral Lymphadenopathy is a condition where the lymph nodes on both sides of the body become swollen and reactive in response to an…
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Reactive (Secondary) Monocytosis
Reactive or secondary monocytosis means your blood has too many monocytes—a type of white blood cell—but the reason is not a blood cancer or…
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Reactive Thrombocytosis – Causes, Symptoms, Treatment
Reactive thrombocytosis, defined as an abnormally high platelet count in the absence of chronic myeloproliferative disease, secondary to an infection, inflammation, and hemorrhage. Secondary…
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Rectal Adenocarcinoma
Rectal Adenocarcinoma is a type of cancer that starts in the cells lining the rectum's inner wall. The rectum is the lower part of…
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Rectal Adenomatoid Tumors
Rectal adenomatoid tumors are rare, benign (non-cancerous) growths that arise from mesothelial cells. Mesothelial cells are found in the lining of certain body cavities…
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Rectal Carcinoid Tumors
Rectal carcinoid tumors are a rare kind of growth found in the rectum. The rectum is the end part of the large intestine, which…
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Rectal Carcinosarcoma
Rectal carcinosarcoma is a rare and aggressive form of cancer that occurs in the rectum, the final section of the large intestine. This guide…
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Rectal Chloroma:
Rectal chloroma is a rare condition that affects the rectum, a part of the large intestine. In this article, we will provide simple, easy-to-understand…
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Rectal Gastrointestinal Stromal Tumors
Rectal GISTs, or Rectal Gastrointestinal Stromal Tumors, are a type of rare, but important medical condition. Rectal GISTs are abnormal growths that occur in…
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Reed’s Syndrome
Reed's Syndrome also known as Reed's disease or familial aortic dissecting aneurysm, multiple endocrine neoplasia type 2 (MEN2), is a rare genetic condition characterized…
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Relative Monocytosis
Relative monocytosis means that the percentage of monocytes in your white blood cells is higher than normal, not because there are too many monocytes…
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Renal Cortical Cell Carcinoma (Renal Cell Carcinoma)
Renal cortical cell carcinoma is a cancer that starts in the outer part of the kidney, called the renal cortex. Most kidney cancers in…
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Renal Dysplasia
Renal dysplasia is a medical condition that affects the development of one or both kidneys in babies during pregnancy. In this article, we will…
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Renal Epithelioid Carcinosarcoma
Renal epithelioid carcinosarcoma is an exceptionally rare and aggressive form of kidney cancer. This comprehensive guide aims to provide detailed descriptions and definitions, explain…
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Renal Sarcomatoid Carcinoma
Renal Sarcomatoid Carcinoma (RSC) is a rare and aggressive form of kidney cancer that can be challenging to diagnose and treat. The term "sarcomatoid"…
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Respiratory Adenomatoid Tumors
Respiratory Adenomatoid Tumors are rare, benign (non-cancerous) growths that occur within the respiratory system, particularly in areas like the trachea, bronchi, or lungs. Although…
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Respiratory Epithelial Dysplasia
Respiratory Epithelial Dysplasia (RED) is a condition that affects the lining of the respiratory tract. In this article, we'll break down what RED is,…
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Reticulohistiocytoma
Reticulohistiocytoma is a rare skin condition that can affect people of all ages. In this article, we'll explore what reticulohistiocytoma is, its various types,…
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Retiform Hemangioendothelioma
Retiform hemangioendothelioma is a rare vascular tumor that affects the blood vessels, particularly those in the skin. It is important to shed light on…
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Retinal Angioma
A retinal angioma, also known as a retinal capillary hemangioma, is a rare, non-cancerous (benign) growth made up of extra blood vessels in the…
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Retinal Astrocytic Hamartoma (RAH)
A retinal astrocytic hamartoma is a benign (non-cancer) lump made of glial cells called astrocytes that sit in the top layers of the retina,…
