Substances found in blood or other fluids that identify the presence of a tumor, and/or the tumor type.
(Superior, middle, or inferior.) Bony prominences in the nasal passageway.
Visualization of structures in the body by recording the reflections of sound waves directed into tissues. May be used during surgery.
An immature, embryonic, or primitive cell. It has a nonspecific appearance with multiple nonspecific activities and functions poorly. See differentiate, dedifferentiate.
The hollow muscular organ in which the impregnated ovum (egg) is developed into an infant.
Relating to or containing blood vessels.
The blood supply of a tumor.
A radiograph or radiation used in diagnostics or treatment.