Cancer can start in the lining of the space behind the nose (nasal cavity) or the nearby air cavities (paranasal sinuses) and sometimes spread to lymph nodes and rarely other parts of the body. Nasal ...

Several layers of tissue make up each part of the nasal cavity and paranasal sinuses. Each layer contains many different types of cells. Different cancers can develop from each type of cell.

Dural sinus malformation occasionally results in the development of giant venous lakes involving torcular herophili. Such dilatation can result in the formation of a ...