Abstract: The new editions of the blue books of the WHO Classification of Head and Neck Tumours and the WHO Classification of Tumours of Haematopoietic and Lymphoid Tissues were published in January and September, 2017, respectively. As one of the contributors of the WHO Classification of Head and Neck Tumours, the author was pleased to introduce briefly about updates of contents on the mucosal lymphoproliferative disorders of the head and neck, diagnostic approaches to these diseases, and some selected diagnostic issues concerning the commonly seen lymphoma subtypes occurring in these regions.

Key words: Head and Neck, Mucosa, Lymphoma, Classification, WHO