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).

"B-cell lymphoma" is a type of cancer that forms in B cells, a type of white blood cell that helps the body fight off infections. It is mainly characterized by the abnormal growth and division of B cells, often leading to the development of tumors, commonly in lymph nodes, but possibly anywhere the lymph system exists.

Basal cell carcinoma refers to a type of skin cancer that originates in the basal cells, which produce new skin cells to replace old ones. It often manifests as a waxy or shiny bump, or as a red, scaly patch on skin regularly exposed to the sun. Being the most common type of skin cancer, early detection and treatment can prevent complications.

Bladder cancer is a malignant growth within the bladder, an organ that stores urine. The most common type, transitional cell carcinoma, originates from cells lining the bladder. Risk factors include smoking, chemical exposure, and chronic infections. Symptoms often include hematuria, discomfort during urination, and lower back pain. Early detection and treatment are vital.

Breast cancer is a malignancy originating in the breast tissue, where cells begin to grow uncontrollably, forming a tumor. This tumor can potentially invade nearby tissues and, if left untreated, can spread to distant parts of the body through the bloodstream or lymphatic system. It is the most common cancer among women globally. Detecting breast cancer early through regular screenings like mammograms and employing a range of treatments such as surgery, chemotherapy, radiation, and targeted therapies can significantly improve the chances of successful treatment and recovery.

Burkitt lymphoma is a type of non-Hodgkin's lymphoma, a fast-growing and aggressive cancer of the lymphatic system. It predominantly affects children and is named after Denis Burkitt, who first identified this disease in African children in 1958. Common symptoms include fever, night sweats, and significant weight loss.

Cancer organoids are three-dimensional cell cultures derived from a patient's tumor cells. These organoids mimic the structure and function of actual tumors, allowing researchers to study cancer in a laboratory setting more effectively. They provide a personalized approach to understanding cancer biology and testing potential treatments.

A carcinoid tumor is a rare, slow-growing type of neuroendocrine tumor that primarily originates in the digestive tract or lungs. It often takes years to display symptoms, which may vary depending on the tumor’s location. Though most carcinoid tumors are benign, some can spread to other parts of the body and become malignant. Early diagnosis and proper treatment can manage the tumor effectively.

Carcinoma of unknown primary (CUP) is a rare disease where cancer cells are found in the body but the place the cancer began, known as the primary site, cannot be determined. Often, the cancer is already advanced by the time it's diagnosed. Early detection and accurate diagnosis of the primary site can aid in targeted treatment.

Central nervous system lymphoma is a rare type of cancer that occurs in the lymph tissue of the brain and spinal cord. It involves the uncontrolled growth of lymphocytes, a type of white blood cell, within the central nervous system.

Cervical cancer is a type of cancer that begins within the cells of the cervix, the lower part of the uterus that connects to the vagina. It occurs when abnormal cells on the cervix grow out of control. Mostly caused by specific strains of the Human Papillomavirus (HPV), it can often be successfully treated when detected early through regular screenings like the Pap test.

Cholangiocarcinoma, commonly known as bile duct cancer, is a rare and aggressive type of cancer that occurs in the tiny, tube-like bile ducts within the liver. These ducts carry bile, a fluid that aids in the digestion of fat, to the gallbladder. This cancer is often hard to diagnose and usually discovered at an advanced stage.

Chondrosarcoma is a type of cancer that predominantly affects the cartilage cells. The disease often manifests in the bones of the upper arms, legs, pelvis, or the spine. The condition typically progresses slowly and carries a higher risk factor for adults and older individuals. Treatment commonly includes surgery or radiation therapy.

Chronic Lymphocytic Leukemia (CLL) is a type of cancer that initiates in the bone marrow, leading to an overproduction of abnormal, mature lymphocytes (a type of white blood cell). It's identified by gradual progression, typically affecting older adults. Symptoms often include swollen lymph nodes, fatigue, and weight loss.

Chronic Myeloid Leukemia (CML) is a type of cancer that starts in the blood-forming cells of the bone marrow and gradually invades the blood. It's characterized by the excessive growth of white blood cells. CML typically develops slowly, but can shift to a more aggressive phase, known as blast crisis, if untreated.

Colon cancer, also known as colorectal cancer, is a malignant disease that starts in the cells of the colon or rectum. It typically begins as small, noncancerous cells (polyps) that may over time develop into cancer. Symptoms can include changes in bowel habits, blood in stool, and persistent abdominal discomfort. Early detection through screening can often lead to successful treatment.

Colorectal adenoma is a type of non-cancerous (benign) tumor that forms in the lining of the colon or rectum. These growths are considered precursors to colorectal cancer, meaning they have the potential to become cancerous over time if not removed.

Colorectal cancer is a type of cancer that begins in the colon or rectum, parts of the large intestine in the digestive system. It typically starts as small, benign clumps of cells called polyps that can, over time, develop into cancers. Early detection through routine screenings can help prevent the progression of colorectal cancer.

Desmoplastic small round cell tumor (DSRCT) is a rare and aggressive type of cancer that typically occurs in the abdomen. It primarily affects adolescents and young adults and is characterized by small, round cancer cells surrounded by dense fibrous tissue.

Ductal Carcinoma In Situ (DCIS) refers to a type of early-stage breast cancer where abnormal cells are found in the lining of the breast milk duct, confined to the area where they started and haven't invaded surrounding tissues. Though non-invasive, it can progress to invasive cancer if untreated.

Endometrial stromal sarcoma is a rare type of cancer that originates in the connective tissue cells of the endometrium, which is the lining of the uterus. It is characterized by abnormal and uncontrolled growth of these cells, which can invade surrounding tissues and spread to other parts of the body.

Endometrial cancer is a type of cancer that starts in the inner lining of the uterus, known as the endometrium. It is the most common form of uterine cancer and is typically diagnosed in postmenopausal women. Symptoms may include abnormal vaginal bleeding, pelvic pain, and pain during intercourse. Early detection is crucial for successful treatment.

Epidermal carcinoma is a type of skin cancer that originates in the epidermis, the outermost layer of the skin. It involves the uncontrolled growth of abnormal cells in this layer, leading to the formation of tumors. This condition is often associated with prolonged exposure to ultraviolet (UV) radiation from the sun or tanning beds.

Epidermoid carcinoma, also known as squamous cell carcinoma, is a type of cancer that primarily originates from the squamous cells found in the skin or the mucous membranes. It's commonly seen on sun-exposed areas like face and hands but can occur in other body parts. It often appears as a scaly, crusty, or warty growth or a non-healing sore. Regular medical checkups are essential for early detection and treatment.

Esophageal cancer is a type of malignancy that originates in the esophagus, the long, hollow tube that connects your throat to your stomach. It generally starts in the cells lining the esophagus and can occur anywhere along the esophagus. The disease is often symptomatic with difficulty swallowing, weight loss, or chest discomfort. The two primary types are squamous cell carcinoma and adenocarcinoma.

Extranodal lymphoma is a type of cancer that originates in lymphocytes, a kind of white blood cell, but occurs outside the lymph nodes. It can affect organs such as the stomach, skin, and brain.

Extrathyroidal extension refers to the spread of thyroid cancer beyond the thyroid gland into surrounding tissues. This can affect treatment options and prognosis.

Eyelid cancer refers to a variety of malignancies that affect the eyelid. These are usually skin cancers, which develop from cells lining the eyelid. Its common types include basal cell carcinoma, squamous cell carcinoma, and melanoma. The condition may cause symptoms like a persistent lump, red eye, or irritation. Diagnosis and treatment are crucial to prevent complications such as vision loss.

Familial cancer refers to cancer that occurs significantly more frequently within a family compared to the general population, often due to a genetic predisposition. Despite sharing common environmental factors, these cancers primarily result from inherited gene mutations that are passed on from generation to generation, increasing susceptibility to specific cancer types.

Fibrosarcoma is a rare type of cancer that originates from fibrous tissue, typically affecting the legs, arms, or trunk. Characterized by the rapid growth of spindle-shaped cells, it is most common in middle-aged adults. With early detection and treatment - often a combination of surgery, radiation, and chemotherapy - the prognosis can be improved.

Follicular carcinoma is a type of thyroid cancer that arises from the follicular cells of the thyroid gland. It is generally slow-growing and often has a good prognosis when detected early.

"Gallbladder cancer is a relatively rare form of cancer that originates in the gallbladder, an organ located under the liver that stores bile. This disease often goes undetected due to its hidden location and lack of early symptoms. The specific cause of gallbladder cancer is unknown, but some factors like gallstones, bile duct abnormalities, and certain liver diseases may increase its risk."

Gastric cancer, also known as stomach cancer, is a disease characterized by abnormal and uncontrolled growth of cells in the stomach lining, forming a mass or tumor. Its symptoms include indigestion, unintended weight loss, stomach pain, bloating, and nausea. Risk factors include Helicobacter pylori infection, smoking, certain dietary factors, and genetic conditions.

Glioblastoma is a malignant, aggressive type of brain cancer that arises from star-shaped cells (astrocytes) forming the supportive tissue of the brain. Known for its fast growth and spread, it is the most lethal of brain cancers. Symptoms usually include headaches, seizures, and neurological deficits. Despite available treatments like surgery, radiation, and chemotherapy, prognosis remains poor.

"Glioma" is a type of tumor that occurs in the brain and spinal cord. It begins in the glial cells, which provide support and protection for neurons in the brain. Gliomas can set in across different forms and severity, ranging from benign to highly malignant. Symptoms typically vary and depend on the tumor's location and size.

Gliosarcoma is a rare and aggressive type of brain tumor that contains both glial and sarcomatous components. It is a variant of glioblastoma and typically occurs in adults, often presenting with symptoms such as headaches, seizures, and neurological deficits.

Hodgkin lymphoma, also known as Hodgkin's disease, is a type of blood cancer that originates in the lymphatic system, which is part of the body's immune system. This condition is characterized by the abnormal growth of cells in the lymph nodes, often causing swelling and potentially spreading to other body parts. Typical symptoms include painless swollen lymph nodes, fatigue, and unexplained weight loss.

Indolent lymphoma is a type of cancer that affects the lymphatic system. It is characterized by slow growth and progression, which means it often takes years to become serious. Despite its slow nature, it can still require treatment and monitoring.

Inflammatory Breast Cancer (IBC) is an aggressive and uncommon type of breast cancer characterized by extensive inflammation and redness in the breast. It progresses rapidly, often making the breast swollen, tender, and appearing infected. IBC accounts for 1-5% of all breast cancer cases, demanding early diagnosis and prompt treatment to optimize patient outcomes.