Hi, welcome to the forum, yes, kidney
infection can be related to the pyelonephritis.
Urinary tract infection can be due to
infection involving any part from kidney to urethra. Infection may be pyelonephritis (involving upper urinary tract), urethritis, uretitis, cystitis (lower urinary tract) etc.
Presence of Anatomic abnormalities resulting in obstruction, stasis, or reflux of urinary flow all predisposes towards recurrent urinary infections.