Radiology

Fibrosus describes something relating to, consisting of, or characterized by fibrous tissue. In medical or anatomical contexts it often refers to tissues or structures that are fibrous in texture rather than vascular or glandular. The term is used in descriptions of connective tissue or fibrosed regions, where collagen-rich fibers predominate, imparting a tough, resilient quality to the structure.

Fluoroscopy is a medical imaging technique that uses X-ray radiation to obtain real-time moving images of internal body structures. It enables clinicians to observe physiological processes, such as swallowing or blood flow, as they happen, by recording fluoroscopic video sequences. The term combines fluor- (light, flame) with -scopy (to examine).

Foramen refers to an opening or pore in a bone through which nerves, vessels, or other structures pass. In anatomy it denotes a natural hole, typically circular or oval, that connects internal spaces with exterior or other cavities. The term is most often used in phrases like foramen magnum or foramina plural, and is essential in anatomical descriptions and imaging interpretations.

Frontal is an adjective relating to the front part of something, especially the forehead or anterior region of the body or a structure. It can also describe something occurring at the front, facing forward, or pertaining to the frontal bone or frontal cortex in anatomy. In general use, it denotes forward-facing position, surface, or aspect, often in technical, medical, or anatomical contexts.

Fusion refers to the process or result of joining two or more things into a single, unified entity. It can denote combining ideas, cultures, or technologies, and is used across science, art, and cuisine to describe integrated blends that retain elements of the originals while creating something new. The term emphasizes harmony, synthesis, and the merging of distinct parts into a cohesive whole.

Gallstone is a medical term for a small, hard deposit that forms in the gallbladder, often composed of cholesterol or bilirubin. It can obstruct bile flow and cause pain or digestive symptoms. The word combines gall- (bile) with stone, reflecting its nature as a stone-like concretion within the biliary system.

Gallstones are solid concretions that form within the gallbladder from bile components. They can vary in size and may cause pain or biliary complications if they migrate into ducts. The term combines gall (relating to bile) and stones (solid aggregates).

Glioblastoma is a highly aggressive brain tumor classified as a grade IV astrocytoma. It typically presents rapid growth and diffuse infiltration into surrounding brain tissue, making treatment challenging. The term combines Greek roots for 'glio' (glial cells), 'blast' (bud/immature cell), and 'oma' (tumor).

Goiter refers to an abnormal enlargement of the thyroid gland, typically visible as a swelling in the neck. It can result from iodine deficiency, autoimmune disease, or other thyroid disorders, and may be asymptomatic or cause discomfort, coughing, or difficulty swallowing. The term also historically described enlarged glands in animals, but is most commonly used in medical contexts today.

Granuloma is a small area of inflammation, typically a cluster of immune cells, which forms in response to infection, injury, or irritants. It can occur in various tissues, often indicating a chronic or persistent immune reaction. The term is used across medical and scientific contexts to describe this nodular inflammatory process.

Hemorrhage (noun) refers to a discharge of blood from a ruptured blood vessel, either externally or internally. It can denote significant bleeding due to injury, illness, or surgical procedures, and is used in medical and everyday contexts. The term also appears metaphorically to describe rapid, excessive loss of something valuable.

Hemothorax is a medical condition in which blood accumulates in the pleural cavity surrounding the lungs, impairing breathing. It results from trauma, surgery, or disease, and may require drainage or other intervention. The term combines 'hemo-' (blood) with 'thorax' (chest).

Hepatomegaly is the medical term for an enlarged liver. It is a noun used in clinical contexts to describe hepatomegaly of varying degrees, often indicating underlying hepatic disease or systemic illness. The word combines two Greek-derived elements and is commonly encountered in medical documentation and discussions of liver pathology.

Herniation is the act or process of a structure, such as an organ or tissue, protruding through its usual boundary or an opening, often due to weakness or pressure. In medicine, it commonly refers to a portion of tissue (like an intervertebral disc or abdominal organ) pushing through a surrounding membrane or fascia. The term implies displacement rather than normal position, and is frequently used to describe pathological protrusion.

Heterogeneous is an adjective describing a composition made of unlike parts or diverse elements. It denotes variation within a group or mixture, contrasted with homogeneous. In academic contexts, it often refers to datasets, populations, or materials containing varied constituents.

Homogeneous describes a mixture or group in which the components are so similar that the whole appears uniform or identical throughout; all parts share the same composition or properties. It is often used in science to denote uniform composition and in everyday speech to describe a consistent, undifferentiated set. The term contrasts with heterogeneous, where components remain distinct.

Hydrocephalus is a medical condition in which fluid builds up inside the skull, putting pressure on the brain. It is typically caused by impaired drainage or blocked pathways, leading to enlarged head size in infants or cognitive and physical symptoms in others. Proper treatment often involves surgical intervention to relieve the pressure.

Hydronephrosis is a medical condition in which one or both kidneys become enlarged due to urine buildup from a blockage or obstruction. The term combines Greek roots for water and kidney, and describes the distention of the renal pelvis and calyces. It is typically diagnosed via imaging and can be acute or chronic, requiring medical evaluation and treatment.