ArticleIDCases2021
Lofgren syndrome in close temporal association with mild COVID-19 - Case report.
Article in IDCases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
7 citing papers in PubMed, 10 citations in OpenAlex.
- Post-COVID-19-Associated Asymptomatic Sarcoidosis with Hypercalcemia and Renal Dysfunction: A Case Report and Literature Review.The American journal of case reports · 2025Review
- Granulomatous interstitial nephritis due to sarcoidosis following SARS-CoV-2 infection: a rare case report.CEN case reports · 2025Article
- Sarcoidosis in a young adult: A rare sequelae of COVID-19 infection.Clinical case reports · 2024Article
- Incidence, management and prognosis of new-onset sarcoidosis post COVID-19 infection.Sarcoidosis, vasculitis, and diffuse lung diseases : official journal of WASOG · 2024Article
- Sarcoidosis following COVID infection: A case series.Respirology case reports · 2023Article
- Sarcoidosis developing after COVID-19: A case report.Respirology case reports · 2022Article
- COVID-19 mRNA Vaccine-Associated Uveitis Leading to Diagnosis of Sarcoidosis: Case Report and Review of Literature.Journal of investigative medicine high impact case reportsReview
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Coronavirus infection disease 2019 (COVID-19) has been linked to the development of various autoimmune disorders. Lofgren syndrome, consisting of bilateral pulmonary hilar lymphadenopathy, erythema nodosum and polyarthritis, is a rare autoimmune disease that represents an acute form of sarcoidosis. We present the case of Lofgren syndrome developing in close temporal association with COVID-19. Clinical presentation consisted of fever, bilateral lung lymphadenopathy, arthralgias and erythema nodosum. Hilar lymph node biopsy revealed pathology consistent with sarcoidosis. Three weeks prior to presentation, the patient experienced respiratory symptoms. Serological examination at the time of presentation revealed positive IgM and IgG antibodies against SARS-CoV-2 nucleocapsid protein. Most symptoms resolved following a course of oral prednisone. This case report suggests a possible link between COVID-19 and the development of sarcoidosis, however, further studies are needed to conclude this association.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.