Primary Trichodysplasia Spinulosa Polyomavirus Infection in a Kidney Transplant Child Displaying Virus‐Infected Decoy Cells in the Urine

: We report a case of primary trichodysplasia spinulosa (TS) infection in a kidney transplant child and describe for the first time the presence of degenerated TS-associated polyomavirus (TSPyV)-infected cells in a TS patient's urine that are morphologically different from BK or JC polyomavirus-infected decoy cells.