Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Malakoplakia ?
    ### Response:
    Malakoplakia is a rare chronic inflammatory disease. It commonly involves the urinary tract, but may also involve the prostate, ureter, pelvis, bones, lungs, testes, gastrointestinal tract, skin, and kidney.  Malakoplakia of the kidney is often associated with chronic kidney infection and obstruction.
    