Cancer-Related Dictionary

Acinar cell carcinoma is a rare type of cancer that originates in the acinar cells of the pancreas, which are responsible for producing digestive enzymes. It is characterized by the abnormal growth of these cells, leading to the formation of a tumor in the pancreas.

Acute Lymphoblastic Leukemia (ALL) is a rare type of cancer characterized by the rapid production of abnormal white blood cells in the bone marrow. These cells impede the production of normal blood cells, triggering symptoms like fatigue, fever, and bleeding. ALL is most common in children but can also occur in adults. Treatment often involves chemotherapy, radiation, targeted therapy, or stem cell transplant.

Acute Myeloid Leukemia (AML) is a rapid-developing type of blood cancer that affects the myeloid line of cells in the bone marrow. Marked by an overproduction of immature white blood cells known as blasts, AML interferes with the production of normal blood cells, leading to anemia, infection, and bleeding complications. Fast diagnosis and treatment are essential due to its aggressive nature.

Acute promyelocytic leukemia (APL) is a subtype of acute myeloid leukemia, a fast-growing cancer of the blood-forming cells in the bone marrow. In APL, immature blood cells called promyelocytes accumulate in the bone marrow, reducing the production of healthy white and red blood cells and platelets. This can lead to fatigue, susceptibility to infections, and increased bleeding.

Adenocarcinoma in situ is a type of cancer where abnormal cells are found in the glandular tissue lining but have not spread to nearby tissues. It is considered an early form of cancer and is often treatable if detected early.

Ameloblastoma is a rare, benign tumor that typically occurs in the jaw near the molars. It originates from cells involved in tooth development and can cause swelling and pain in the affected area. Although benign, it can be aggressive and invade nearby bone and tissue.

Anal cancer is a rare type of malignancy arising from the anal canal or rectum. It starts when healthy cells in or around the anus change and grow out of control, forming a mass. Risk factors include increasing age, history of HPV infections, and smoking. Symptoms may include rectal bleeding, pain, or changes in bowel movements. Treatment often involves chemotherapy, radiation, or surgery.

Anaplastic ependymoma is a rare and aggressive type of brain tumor that originates from ependymal cells lining the ventricles of the brain and the central canal of the spinal cord. It is characterized by rapid growth and a tendency to spread within the central nervous system.

Anaplastic oligodendroglioma is a rare and aggressive type of brain tumor that originates from oligodendrocytes, which are cells that support nerve cells in the brain. It is characterized by its rapid growth and tendency to spread, making it more challenging to treat compared to other types of brain tumors.

Anaplastic thyroid cancer is a rare, aggressive type of thyroid cancer characterized by uncontrolled growth of cells in the thyroid, a gland located at the base of the neck. This cancer often grows quickly and spreads to other parts of the body, making it difficult to treat. Despite its severity, it accounts for only about 1-2% of all thyroid cancers.

Angiosarcoma is a rare, malignant tumor that originates from endothelial cells, the cells that line the interior surface of blood vessels. It can occur anywhere in the body, but is most commonly found in the skin, breast, liver, spleen, and deep tissue. Due to its aggressive nature, it often leads to a poor prognosis. This tumor presents unique challenges due to its high recurrence rate and resistance to treatment.

Astrocytoma is a type of brain tumor that originates from astrocytes, the star-shaped cells that make up the supportive tissue of the brain. These tumors can occur in various parts of the brain and spinal cord. Astrocytomas vary in their level of aggressiveness, ranging from benign (non-cancerous) to malignant (cancerous).