What is Head and Neck Cancer (HNC)? (1,2)
The broad term used to describe tumors in the region around throat, larynx, nose, sinuses, and mouth. Most of the head and neck cancers are squamous cell carcinomas, which arise from flat squamous cells. These squamous cells form the thin layer of tissue on the surface of the structures in the head and neck.
If the cancer is found only in the squamous layer of cells, it is called carcinoma in situ.
If the cancer grows beyond the squamous cell layer, then it is called invasive squamous cell carcinoma. Asian countries like India are a high-risk country with oral squamous cell carcinoma being the most common cancer in men and the fourth most common cancer in women.