Tambazi (ing. oedema, edema) ni maradhi inayosababisha uvimbe kwenye mwili. Inaonekana hasa mkononi, mguuni na tumboni lakini inaweza kutokea pia ndani ya mwili. Inapatikana wakati viowevu (majimaji) vinatoka kwenye mishipa midogo mwilini na kukusanyika katika tishu yaani kati ya seli za mwili. Tambazi ya mapafu (ing. pulmonary edema ) ni mkusanyiko wa majimaji kwenye mapafu. Hali hii ni hatari kwa sababu kiowevu ndani ya mapafu inaleta matata ya kupumua, inapunguza oksijeni inayopatikana mwilini na kama ni nyingi sana inaweza kumwua mtu. Tambazi tumboni huitwa ascites. Dugdale, David (2013-04-21). Foot, leg, and ankle swelling. National Institutes of Health. Iliwekwa mnamo 2015-01-03. Edema. Mayo Clinic (2014-09-19). Iliwekwa mnamo 2015-01-03. Chen, Michael (2014-05-13). Pulmonary edema. National Institutes of Health. Iliwekwa mnamo 2015-01-03. Ware LB, Matthay MA (December 2005). "Clinical practice. Acute pulmonary edema". N. Engl. J. Med. 353 (26): 2788–96. doi:10.1056/NEJMcp052699 . PMID 16382065 . Longstreth, George (2013-10-13). Ascites. National Institutes of Health. Iliwekwa mnamo 2015-01-03.