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.
141 matching article(s).
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Periocular Malignancies
Periocular malignancies are cancers that start in the skin and glands of the eyelid and the skin right next to the eye. This area…
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Periodic Neutropenia – Causes, Symptoms, Treatment
Periodic Neutropenia/Cyclic Neutropenia is a very rare hematological condition and is characterized by regular fluctuations in blood neutrophil counts, leading to periodic neutropenia with…
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Peripheral T-Cell Lymphoma (PTCL)
Peripheral T-cell lymphoma (PTCL) is a type of cancer that affects your body's immune system. In this article, we'll break down what PTCL is,…
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Peritoneal Cancer – Causes, Symptoms, Treatment
Peritoneal Cancer/Peritoneal carcinomatosis (PC) generally refers to the metastatic involvement of the peritoneum. The name was first coined in 1931 by Sampson for the…
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Peritoneal Carcinomatosis – Causes, Symptoms, Treatment
Peritoneal carcinomatosis (PC) generally refers to the metastatic involvement of the peritoneum. The name was first coined in 1931 by Sampson for the thorough…
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Peritoneal Carcinosarcoma
Peritoneal Carcinosarcoma is a rare and aggressive cancer that occurs in the peritoneum—the thin layer of tissue lining the inside of the abdomen and…
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Peritoneal Metastases – Causes, Symptoms, Treatment
Peritoneal Metastases/Peritoneal carcinomatosis (PC) generally refers to the metastatic involvement of the peritoneum. The name was first coined in 1931 by Sampson for the…
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Periungual Fibroma
Periungual fibroma, also known as Koenen's tumor, is a benign fibrous nodule that forms on the periungual region of the fingers or toes. This…
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Persistent (Long-Term) Monocytosis
Persistent monocytosis means that a certain kind of white blood cell—monocytes—is too high for a long time. Normally adults have an absolute monocyte count…
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PHACE Syndrome – Causes, Symptoms, Diagnosis, Treatment
PHACE Syndrome is a rare disorder that affects multiple systems of the body. This disorder is characterized by an association of several different abnormalities…
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Phakomatous Choristoma
Phakomatous choristoma is a very rare, benign (non-cancerous) growth made of lens-like tissue that develops in the wrong place, most often at the inner,…
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Phlebectasis
Phlebectasis refers to the abnormal dilation or expansion of veins, particularly those found in the legs. When veins become dilated, they lose their ability…
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Pigmented Basal Cell Carcinoma
Pigmented basal cell carcinoma (PBCC) is a type of skin cancer that typically appears as a brown or black spot on the skin. In…
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Pigmented Sebaceous Epithelioma
Pigmented Sebaceous Epithelioma, although a rare skin condition, is crucial to understand. This article will break down everything you need to know about it,…
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Pilar Leiomyoma
Pilar leiomyoma, also known as piloleiomyoma, is a benign tumor that develops from the smooth muscle cells of the arrector pili muscle within the…
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Piloleiomyoma
Piloleiomyoma is a relatively uncommon but important skin condition that affects many individuals worldwide. Piloleiomyoma is a benign (non-cancerous) tumor that originates from smooth muscle…
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Pilomatrical carcinoma
Pilomatrical carcinoma is a rare and aggressive malignant tumor that originates from hair follicle matrix cells. It accounts for less than 1% of all…
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Pilomatrixoma
Pilomatrixoma is a benign (non-cancer) skin tumor that grows from the hair root cells that live deep in the skin. These special hair root…
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Pilomyxoid Astrocytoma (PMA)
Pilomyxoid astrocytoma is a rare brain tumor that starts from star-shaped support cells in the brain called astrocytes. Doctors first recognized it as a…
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Pineal Parenchymal Tumors
Pineal parenchymal tumors (PPTs) are a rare group of neoplasms that arise from the specialized cells—pineocytes—within the pineal gland, a small endocrine structure located…
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Pituitary Adenoma (Pituitary Neuroendocrine Tumor)
A pituitary adenoma is a growth that starts in the pituitary gland, a small hormone-making gland that sits behind your nose at the base…
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Planum Sphenoidale Meningioma:
Planum Sphenoidale Meningioma is a type of brain tumor that occurs in the area behind the eyes and nose. It can cause various symptoms…
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Plaque-Type Cutaneous Lymphoid Hyperplasia
Plaque-Type Cutaneous Lymphoid Hyperplasia (PTCLH) is a skin condition that can cause red, raised plaques or bumps on your skin. It's important to know…
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Plasma Cell Myeloma – Causes, Symptoms, Treatment
Plasma Cell Myeloma is a neoplastic plasma cell disorder that usually presents after the fifth decade of life; it is rarely described in the…
