CONCLUSION
We described the case of an older patient with late-onset ARS syndrome
who tested positive for anti-OJ and anti-Ro-52 antibodies. Interstitial
pneumonia is an established complication of anti-ARS antibody syndrome,
particularly when accompanied by positive anti-OJ antibodies. However,
it can also result in rapid necrosis of the fingers without interstitial
pneumonia. Prednisolone pulse therapy was remarkably effective, leading
to the rapid cessation of disease progression. Detecting anti-OJ
antibodies by immunoprecipitation is potentially more reliable than the
LIA method. Information on the clinical course of this atypical ARS
syndrome and treatment could contribute to the daily practice of
rheumatology for clinicians.