Highlights
- •The annual incidence of sarcoidosis in north Spain (3.58/100,000 inhabitants) is comparable to that of other Mediterranean countries.
- •An upward trend in incidence has been detected over the last two decades.
- •No gender predominance was observed in the incidence of sarcoidosis.
- •Males have an earlier disease onset.
- •Löfgren's syndrome (an acute variant of sarcoidosis) and the mildest radiological stages are more frequent in women.
Abstract
Background
The incidence of sarcoidosis varies widely worldwide. The aim of this study was to
estimate the incidence of sarcoidosis in a population-based cohort from northern Spain.
Methods
Patients diagnosed with sarcoidosis at Marqués de Valdecilla University Hospital,
corresponding to the central Cantabria that encompasses Santander city and the surroundings,
between January 1999 and December 2019were assessed. The diagnosis of sarcoidosis
was established according to ATS/ERS/WASOG criteria as follows: compatible clinical
and radiological presentation, histopathologic confirmation, and exclusion of other
granulomatous diseases. Demographic and clinical data were collected. The incidence
of sarcoidosis between 1999-2019 was estimated by sex, age, and year of diagnosis.
Results
A total of 234 patients were included, with a male/female ratio of 0.81. The mean
age of the cohort at diagnosis was 48.43 ± 14.83 years and 129 (55.1%) were women.
Incidence during the period of study was 3.58 per 100,000 populations (95% confidence
interval: 3.13 – 4.07). No gender predominance was observed. An increase in age at
diagnosis over time was found in the linear regression analysis. Thoracic affection
was found in 180 patients (76.9%). Most common extra-thoracic areas affected were
skin (34.2%), joints (30.8%) and eyes (15.4%).
Conclusions
The incidence of sarcoidosis estimated in this study was similar to that of other
Mediterranean countries. No gender predominance was observed. Consistent with previous
studies, male presented an incidence peak 10 years earlier than female. A second peak
between ages 60-69 years was identified in both sexes.
Keywords
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Article info
Publication history
Published online: May 26, 2021
Accepted:
May 4,
2021
Received in revised form:
April 6,
2021
Received:
February 22,
2021
Identification
Copyright
© 2021 Published by Elsevier B.V. on behalf of European Federation of Internal Medicine.
