This is the official guideline endorsed by the specialty associations involved within the care of head and neck cancer patients within the UK. With only limited high-level evidence for management of nasal and sinus paranasales cancers because of low incidence and diverse histology, this paper provides recommendations on the workout and management supported the prevailing evidence base. Tumours within the sinonasal region are rare, affecting but 1 in 100 000 people per annum.1 they're histologically a various group of tumours and potentially pose significant management problems thanks to their close proximity to the orbit and cavum. epithelial cell carcinoma (SCC) is that the commonest malignant tumour, but tumours of each histological type can occur. The commoner epithelial tumours include adenocarcinoma, olfactory neuroblastoma, melanoma and adenoid cystic carcinoma. Sarcomas, e.g. chondrosarcoma and rhabdomyosarcoma and haemoproliferative tumours, e.g. lymphoma may additionally occur. Benign tumours include inverted papilloma (IP), osteoma, juvenile angiofibroma (JA), haemangiopericytoma, haemangioma, schwannoma, pleomorphic adenoma and meningioma. All areas of the cavum and paranasal sinuses are often affected, but the lateral wall, ethmoids and sinus are the foremost common primary sites. The frontal and sphenoid sinuses are rare primary sites for reasons that are unknown.