Immunotactoid glomerulopathy in rheumatoid arthritis.

In this clinical case report, we explore a rare type of renal involvement in a patient with rheumatoid arthritis: the polyclonal variant of immunotactoid glomerulopathy. To date, 26 cases of this rare variant have been reported, and our patient is the second solely associated with rheumatoid arthritis. Our report includes a detailed case description, follow-up, and an extensive review of immunotactoid glomerulopathy with comprehensive differential diagnostic considerations.