The Danish Head and Neck Cancer database
Authors Overgaard J, Jovanovic A, Godballe C, Grau Eriksen J
Received 4 January 2016
Accepted for publication 25 February 2016
Published 25 October 2016 Volume 2016:8 Pages 491—496
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Colin Mak
Peer reviewer comments 4
Editor who approved publication: Professor Henrik Toft Sørensen
Jens Overgaard,1 Aleksandar Jovanovic,1 Christian Godballe,2,3 Jesper Grau Eriksen3
1Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, 2Department of ORL – Head and Neck Surgery, 3Department of Oncology, Odense University Hospital, Odense, Denmark
Aim of the database: The Danish Head and Neck Cancer database is a nationwide clinical quality database that contains prospective data collected since the early 1960s. The overall aim of this study was to describe the outcome of the national strategy for multidisciplinary treatment of head and neck cancer in Denmark and to create a basis for clinical trials.
Study population: The study population consisted of all Danish patients referred for treatment of squamous cell carcinoma of the larynx, pharynx, oral cavity, or neck nodes from unknown primary or any histopathological type (except lymphoma) of cancer in the nasal sinuses, salivary glands, or thyroid gland (corresponding to the International Classification of Diseases, tenth revision, classifications C.01–C.11, C.30–C.32, C.73, and C.80).
Main variables: The main variables used in the study were symptoms and the duration of the symptoms; etiological factors; pretreatment and diagnostic evaluation, including tumor–node–metastasis classification, imaging, histopathology, and laboratory tests; primary treatment with semidetailed information of radiotherapy, surgery, and medical treatment; follow-up registration of tumor status and side effects; registration of relapse and treatment thereof; and registration of death and cause of death.
Main results: Data from >33,000 patients have been recorded during a period of >45 years. In this period, the outcome of treatment improved substantially, partly due to better treatment as a result of a series of continuous clinical trials and subsequent implementation in national guidelines. The database has furthermore been used to describe the effect of reduced waiting time, changed epidemiology, and influence of comorbidity and socioeconomic parameters.
Conclusion: Half a century of registration of head and neck cancer treatment and outcome has created the basis for understanding and has substantially contributed to improve the treatment of head and neck cancer at both national and international levels.
Keywords: head and neck cancer, squamous cell carcinoma, radiotherapy, national population cohort
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