The Danish Nonmelanoma Skin Cancer Dermatology Database.
The Danish Nonmelanoma Skin Cancer Dermatology Database was established in 2008. The aim of this database was to collect data on nonmelanoma skin cancer (NMSC) treatment and improve its treatment in Denmark. NMSC is the most common malignancy in the western countries and represents a significant challenge in terms of public health management and health care costs. However, high-quality epidemiological and treatment data on NMSC are sparse.


METHODS
The NMSC database includes patients with the following skin tumors: basal cell carcinoma (BCC), squamous cell carcinoma, Bowen's disease, and keratoacanthoma diagnosed by the participating office-based dermatologists in Denmark.


METHODS
Clinical and histological diagnoses, BCC subtype, localization, size, skin cancer history, skin phototype, and evidence of metastases and treatment modality are the main variables in the NMSC database. Information on recurrence, cosmetic results, and complications are registered at two follow-up visits at 3 months (between 0 and 6 months) and 12 months (between 6 and 15 months) after treatment.
In 2014, 11,522 patients with 17,575 tumors were registered in the database. Of tumors with a histological diagnosis, 13,571 were BCCs, 840 squamous cell carcinomas, 504 Bowen's disease, and 173 keratoakanthomas.


CONCLUSIONS
The NMSC database encompasses detailed information on the type of tumor, a variety of prognostic factors, treatment modalities, and outcomes after treatment. The database has revealed that overall, the quality of care of NMSC in Danish dermatological clinics is high, and the database provides the necessary data for continuous quality assurance.
Dermatology Clinic, Grenaa, Central Denmark Region.
Anna Lei
AL
Lamberg
Dermatology Clinic, Aalborg, North Denmark Region.
Henrik
H
Sølvsten
Department of Dermato-Allergology, Gentofte Hospital, University of Copenhagen, Gentofte.
Ulrikke
U
Lei
Department of Dermato-Allergology, Gentofte Hospital, University of Copenhagen, Gentofte.
Gabrielle Randskov
GR
Vinding
Dermatology Clinic, Charlottenlund, Capital Region of Denmark.
Ida Marie
IM
Stender
Department of Dermatology, Roskilde Hospital, Health Sciences Faculty, University of Copenhagen, Roskilde, Zealand Region.
Gregor Borut Ernst
GB
Jemec
Department of Dermatology, Odense University Hospital, Odense.
Tine
T
Vestergaard
Dermatology Clinic, Vejle, Region of Southern Denmark.
Henrik
H
Thormann
Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Capital Region of Denmark.
Merete
M
Hædersdal
Dermatology Clinic, Nykøbing Falster, Zealand Region.
Tomas Norman
TN
Dam
Department of Dermatology, University Hospital of Aarhus, Aarhus, Central Denmark Region, Denmark.
Anne Braae
AB
Olesen
basal cell carcinoma; epidemiology; nonmelanoma skin cancer; squamous cell carcinoma; treatment