thumb|right|Hepatic gumma thumb|Moulage of a gumma in syphilis for training students. University of Tübingen. A gumma (plural gummata or gummas) is a soft, non-cancerous growth resulting from the tertiary stage of syphilis (and yaws).
th!umb|right|Hepatic gumma t:humb|Mo:ulage of a gumma in syphilis for training students. ?University of Tübingen. A gumma (plural gummata or gummas) is a soft, non-cancerous growth re!sulting from the tertiary stage of syphilis (and yaws).