An observational study in Actinic Keratoses, sponsored by Maastricht University Medical Center. Active, not recruiting at 1 site in Netherlands. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-04-04.
Sponsored by Maastricht University Medical Center · Observational
This study evaluates the implementation of the General Practitioners guidelines 'Suspicious Skin Lesions' and investigated whether their publication and implementation has led to a reduction in the proportion of referrals of low-risk patients with actinic keratosis to secondary care, after publication of the General Practitioners guidelines and implementation activities.
In the Dutch healthcare system, patients are first examined by the general practitioner who decides whether a referral to a dermatologist is indicated. Both general practitioners and dermatologists can diagnose and treat patients with actinic keratosis. Therefore, it is necessary to distinguish which patients the general practitioner should refer to a dermatologist and which patients are suitable to be treated by the general practitioner.
This retrospective data study evaluates the proportion of low risk actinic keratosis patients in 2019 en 2018.
364 studies on the registry are indexed under Keratosis, Actinic; 31 are open to participants now.
This study's enrollment of 3,379 is above the median of 179 across 35 observational studies indexed under Keratosis, Actinic.
Browse Keratosis, Actinic studies →Maastricht University Medical Center is the lead sponsor of 835 studies on the registry; 122 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Data from patients are collected retrospectively using the Electronic health records. Patients were selected based on the diagnosis-treatment-combination (DTC) 17 (premalignant lesion) and DTC 14 (cutaneous malignancy) that was registered from January 2018 to December 2019 by the dermatologist.
Exclusion Criteria:
Low risk actinic keratosis patients referred by the general practitioner and diagnosed as actinic keratosis by the dermatologist in 2018 and 2019.
High risk actinic keratosis patients referred by the general practitioner and diagnosed as actinic keratosis by the dermatologist in 2018 and 2019.
Change in proportion of low-risk actinic keratosis patients among all actinic keratosis patients.
The change in proportion of low-risk actinic keratosis patients among all actinic keratosis patients referred by the general practitioner to the dermatologist. The definition of low-risk actinic keratosis patients was based on the General Practitioners guidelines 'Suspicious skin lesions' (published in 2017). Patients were defined as low-risk when they were not immunocompromised, did not have a cutaneous malignancy in their medical history, did not have previous treatment or if they did not have extensive lesions.
Time frame: 2018 compared to 2019 (2 years)
This study is active, not recruiting, as verified in Apr 2025. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Maastricht University Medical Center