Main Entry: Con·ca·to's disease Pronunciation: kän-"kät-(")Oz-, kOn-, k&n- Function: noun :POLYSEROSITIS Conácaáto/kOn-'kät-(")O, kän-,/Luigi Maria(1825–1882),Italian physician. In 1881 Concato published a classic description of the inflammation of the serous membranes that is now known as Concato's disease.