Cancer | Definition, Causes, Types, & Treatment | Britannica

July 6, 2025

Cancer is a disease characterized by the uncontrolled multiplication of abnormal cells in the body. There are numerous types of cancers, with certain types being major causes of sickness and death worldwide.

https://www.britannica.com/science/cancer-disease

Cancer | Definition, Causes, Types, & Treatment | Britannica <body> <h1> Array ( [0] => xancer | definition, causes, types, & treatment | britannica [1] => vancer | definition, causes, types, & treatment | britannica [2] => fancer | definition, causes, types, & treatment | britannica [3] => dancer | definition, causes, types, & treatment | britannica [4] => czncer | definition, causes, types, & treatment | britannica [5] => csncer | definition, causes, types, & treatment | britannica [6] => cwncer | definition, causes, types, & treatment | britannica [7] => cqncer | definition, causes, types, & treatment | britannica [8] => cabcer | definition, causes, types, & treatment | britannica [9] => camcer | definition, causes, types, & treatment | britannica [10] => cajcer | definition, causes, types, & treatment | britannica [11] => cahcer | definition, causes, types, & treatment | britannica [12] => canxer | definition, causes, types, & treatment | britannica [13] => canver | definition, causes, types, & treatment | britannica [14] => canfer | definition, causes, types, & treatment | britannica [15] => cander | definition, causes, types, & treatment | britannica [16] => cancwr | definition, causes, types, & treatment | britannica [17] => cancsr | definition, causes, types, & treatment | britannica [18] => cancdr | definition, causes, types, & treatment | britannica [19] => cancrr | definition, causes, types, & treatment | britannica [20] => canc4r | definition, causes, types, & treatment | britannica [21] => canc3r | definition, causes, types, & treatment | britannica [22] => cancee | definition, causes, types, & treatment | britannica [23] => canced | definition, causes, types, & treatment | britannica [24] => cancef | definition, causes, types, & treatment | britannica [25] => cancet | definition, causes, types, & treatment | britannica [26] => cance5 | definition, causes, types, & treatment | britannica [27] => cance4 | definition, causes, types, & treatment | britannica [28] => cancer | sefinition, causes, types, & treatment | britannica [29] => cancer | xefinition, causes, types, & treatment | britannica [30] => cancer | cefinition, causes, types, & treatment | britannica [31] => cancer | fefinition, causes, types, & treatment | britannica [32] => cancer | refinition, causes, types, & treatment | britannica [33] => cancer | eefinition, causes, types, & treatment | britannica [34] => cancer | dwfinition, causes, types, & treatment | britannica [35] => cancer | dsfinition, causes, types, & treatment | britannica [36] => cancer | ddfinition, causes, types, & treatment | britannica [37] => cancer | drfinition, causes, types, & treatment | britannica [38] => cancer | d4finition, causes, types, & treatment | britannica [39] => cancer | d3finition, causes, types, & treatment | britannica [40] => cancer | dedinition, causes, types, & treatment | britannica [41] => cancer | decinition, causes, types, & treatment | britannica [42] => cancer | devinition, causes, types, & treatment | britannica [43] => cancer | deginition, causes, types, & treatment | britannica [44] => cancer | detinition, causes, types, & treatment | britannica [45] => cancer | derinition, causes, types, & treatment | britannica [46] => cancer | defunition, causes, types, & treatment | britannica [47] => cancer | defjnition, causes, types, & treatment | britannica [48] => cancer | defknition, causes, types, & treatment | britannica [49] => cancer | defonition, causes, types, & treatment | britannica [50] => cancer | def9nition, causes, types, & treatment | britannica [51] => cancer | def8nition, causes, types, & treatment | britannica [52] => cancer | defibition, causes, types, & treatment | britannica [53] => cancer | defimition, causes, types, & treatment | britannica [54] => cancer | defijition, causes, types, & treatment | britannica [55] => cancer | defihition, causes, types, & treatment | britannica [56] => cancer | definution, causes, types, & treatment | britannica [57] => cancer | definjtion, causes, types, & treatment | britannica [58] => cancer | definktion, causes, types, & treatment | britannica [59] => cancer | definotion, causes, types, & treatment | britannica [60] => cancer | defin9tion, causes, types, & treatment | britannica [61] => cancer | defin8tion, causes, types, & treatment | britannica [62] => cancer | definirion, causes, types, & treatment | britannica [63] => cancer | definifion, causes, types, & treatment | britannica [64] => cancer | definigion, causes, types, & treatment | britannica [65] => cancer | definiyion, causes, types, & treatment | britannica [66] => cancer | defini6ion, causes, types, & treatment | britannica [67] => cancer | defini5ion, causes, types, & treatment | britannica [68] => cancer | definituon, causes, types, & treatment | britannica [69] => cancer | definitjon, causes, types, & treatment | britannica [70] => cancer | definitkon, causes, types, & treatment | britannica [71] => cancer | definitoon, causes, types, & treatment | britannica [72] => cancer | definit9on, causes, types, & treatment | britannica [73] => cancer | definit8on, causes, types, & treatment | britannica [74] => cancer | definitiin, causes, types, & treatment | britannica [75] => cancer | definitikn, causes, types, & treatment | britannica [76] => cancer | definitiln, causes, types, & treatment | britannica [77] => cancer | definitipn, causes, types, & treatment | britannica [78] => cancer | definiti0n, causes, types, & treatment | britannica [79] => cancer | definiti9n, causes, types, & treatment | britannica [80] => cancer | definitiob, causes, types, & treatment | britannica [81] => cancer | definitiom, causes, types, & treatment | britannica [82] => cancer | definitioj, causes, types, & treatment | britannica [83] => cancer | definitioh, causes, types, & treatment | britannica [84] => cancer | definitionm causes, types, & treatment | britannica [85] => cancer | definitionk causes, types, & treatment | britannica [86] => cancer | definitionl causes, types, & treatment | britannica [87] => cancer | definition. causes, types, & treatment | britannica [88] => cancer | definition causes, types, & treatment | britannica [89] => cancer | definition, xauses, types, & treatment | britannica [90] => cancer | definition, vauses, types, & treatment | britannica [91] => cancer | definition, fauses, types, & treatment | britannica [92] => cancer | definition, dauses, types, & treatment | britannica [93] => cancer | definition, czuses, types, & treatment | britannica [94] => cancer | definition, csuses, types, & treatment | britannica [95] => cancer | definition, cwuses, types, & treatment | britannica [96] => cancer | definition, cquses, types, & treatment | britannica [97] => cancer | definition, cayses, types, & treatment | britannica [98] => cancer | definition, cahses, types, & treatment | britannica [99] => cancer | definition, cajses, types, & treatment | britannica [100] => cancer | definition, caises, types, & treatment | britannica [101] => cancer | definition, ca8ses, types, & treatment | britannica [102] => cancer | definition, ca7ses, types, & treatment | britannica [103] => cancer | definition, cauaes, types, & treatment | britannica [104] => cancer | definition, cauzes, types, & treatment | britannica [105] => cancer | definition, cauxes, types, & treatment | britannica [106] => cancer | definition, caudes, types, & treatment | britannica [107] => cancer | definition, cauees, types, & treatment | britannica [108] => cancer | definition, cauwes, types, & treatment | britannica [109] => cancer | definition, causws, types, & treatment | britannica [110] => cancer | definition, causss, types, & treatment | britannica [111] => cancer | definition, causds, types, & treatment | britannica [112] => cancer | definition, causrs, types, & treatment | britannica [113] => cancer | definition, caus4s, types, & treatment | britannica [114] => cancer | definition, caus3s, types, & treatment | britannica [115] => cancer | definition, causea, types, & treatment | britannica [116] => cancer | definition, causez, types, & treatment | britannica [117] => cancer | definition, causex, types, & treatment | britannica [118] => cancer | definition, caused, types, & treatment | britannica [119] => cancer | definition, causee, types, & treatment | britannica [120] => cancer | definition, causew, types, & treatment | britannica [121] => cancer | definition, causesm types, & treatment | britannica [122] => cancer | definition, causesk types, & treatment | britannica [123] => cancer | definition, causesl types, & treatment | britannica [124] => cancer | definition, causes. types, & treatment | britannica [125] => cancer | definition, causes types, & treatment | britannica [126] => cancer | definition, causes, rypes, & treatment | britannica [127] => cancer | definition, causes, fypes, & treatment | britannica [128] => cancer | definition, causes, gypes, & treatment | britannica [129] => cancer | definition, causes, yypes, & treatment | britannica [130] => cancer | definition, causes, 6ypes, & treatment | britannica [131] => cancer | definition, causes, 5ypes, & treatment | britannica [132] => cancer | definition, causes, ttpes, & treatment | britannica [133] => cancer | definition, causes, tgpes, & treatment | britannica [134] => cancer | definition, causes, thpes, & treatment | britannica [135] => cancer | definition, causes, tupes, & treatment | britannica [136] => cancer | definition, causes, t7pes, & treatment | britannica [137] => cancer | definition, causes, t6pes, & treatment | britannica [138] => cancer | definition, causes, tyoes, & treatment | britannica [139] => cancer | definition, causes, tyles, & treatment | britannica [140] => cancer | definition, causes, ty-es, & treatment | britannica [141] => cancer | definition, causes, ty0es, & treatment | britannica [142] => cancer | definition, causes, typws, & treatment | britannica [143] => cancer | definition, causes, typss, & treatment | britannica [144] => cancer | definition, causes, typds, & treatment | britannica [145] => cancer | definition, causes, typrs, & treatment | britannica [146] => cancer | definition, causes, typ4s, & treatment | britannica [147] => cancer | definition, causes, typ3s, & treatment | britannica [148] => cancer | definition, causes, typea, & treatment | britannica [149] => cancer | definition, causes, typez, & treatment | britannica [150] => cancer | definition, causes, typex, & treatment | britannica [151] => cancer | definition, causes, typed, & treatment | britannica [152] => cancer | definition, causes, typee, & treatment | britannica [153] => cancer | definition, causes, typew, & treatment | britannica [154] => cancer | definition, causes, typesm & treatment | britannica [155] => cancer | definition, causes, typesk & treatment | britannica [156] => cancer | definition, causes, typesl & treatment | britannica [157] => cancer | definition, causes, types. & treatment | britannica [158] => cancer | definition, causes, types & treatment | britannica [159] => cancer | definition, causes, types, &zmp; treatment | britannica [160] => cancer | definition, causes, types, &smp; treatment | britannica [161] => cancer | definition, causes, types, &wmp; treatment | britannica [162] => cancer | definition, causes, types, &qmp; treatment | britannica [163] => cancer | definition, causes, types, &anp; treatment | britannica [164] => cancer | definition, causes, types, &akp; treatment | britannica [165] => cancer | definition, causes, types, &ajp; treatment | britannica [166] => cancer | definition, causes, types, &amo; treatment | britannica [167] => cancer | definition, causes, types, &aml; treatment | britannica [168] => cancer | definition, causes, types, &am-; treatment | britannica [169] => cancer | definition, causes, types, &am0; treatment | britannica [170] => cancer | definition, causes, types, & rreatment | britannica [171] => cancer | definition, causes, types, & freatment | britannica [172] => cancer | definition, causes, types, & greatment | britannica [173] => cancer | definition, causes, types, & yreatment | britannica [174] => cancer | definition, causes, types, & 6reatment | britannica [175] => cancer | definition, causes, types, & 5reatment | britannica [176] => cancer | definition, causes, types, & teeatment | britannica [177] => cancer | definition, causes, types, & tdeatment | britannica [178] => cancer | definition, causes, types, & tfeatment | britannica [179] => cancer | definition, causes, types, & tteatment | britannica [180] => cancer | definition, causes, types, & t5eatment | britannica [181] => cancer | definition, causes, types, & t4eatment | britannica [182] => cancer | definition, causes, types, & trwatment | britannica [183] => cancer | definition, causes, types, & trsatment | britannica [184] => cancer | definition, causes, types, & trdatment | britannica [185] => cancer | definition, causes, types, & trratment | britannica [186] => cancer | definition, causes, types, & tr4atment | britannica [187] => cancer | definition, causes, types, & tr3atment | britannica [188] => cancer | definition, causes, types, & treztment | britannica [189] => cancer | definition, causes, types, & trestment | britannica [190] => cancer | definition, causes, types, & trewtment | britannica [191] => cancer | definition, causes, types, & treqtment | britannica [192] => cancer | definition, causes, types, & trearment | britannica [193] => cancer | definition, causes, types, & treafment | britannica [194] => cancer | definition, causes, types, & treagment | britannica [195] => cancer | definition, causes, types, & treayment | britannica [196] => cancer | definition, causes, types, & trea6ment | britannica [197] => cancer | definition, causes, types, & trea5ment | britannica [198] => cancer | definition, causes, types, & treatnent | britannica [199] => cancer | definition, causes, types, & treatkent | britannica [200] => cancer | definition, causes, types, & treatjent | britannica [201] => cancer | definition, causes, types, & treatmwnt | britannica [202] => cancer | definition, causes, types, & treatmsnt | britannica [203] => cancer | definition, causes, types, & treatmdnt | britannica [204] => cancer | definition, causes, types, & treatmrnt | britannica [205] => cancer | definition, causes, types, & treatm4nt | britannica [206] => cancer | definition, causes, types, & treatm3nt | britannica [207] => cancer | definition, causes, types, & treatmebt | britannica [208] => cancer | definition, causes, types, & treatmemt | britannica [209] => cancer | definition, causes, types, & treatmejt | britannica [210] => cancer | definition, causes, types, & treatmeht | britannica [211] => cancer | definition, causes, types, & treatmenr | britannica [212] => cancer | definition, causes, types, & treatmenf | britannica [213] => cancer | definition, causes, types, & treatmeng | britannica [214] => cancer | definition, causes, types, & treatmeny | britannica [215] => cancer | definition, causes, types, & treatmen6 | britannica [216] => cancer | definition, causes, types, & treatmen5 | britannica [217] => cancer | definition, causes, types, & treatment | vritannica [218] => cancer | definition, causes, types, & treatment | nritannica [219] => cancer | definition, causes, types, & treatment | hritannica [220] => cancer | definition, causes, types, & treatment | gritannica [221] => cancer | definition, causes, types, & treatment | beitannica [222] => cancer | definition, causes, types, & treatment | bditannica [223] => cancer | definition, causes, types, & treatment | bfitannica [224] => cancer | definition, causes, types, & treatment | btitannica [225] => cancer | definition, causes, types, & treatment | b5itannica [226] => cancer | definition, causes, types, & treatment | b4itannica [227] => cancer | definition, causes, types, & treatment | brutannica [228] => cancer | definition, causes, types, & treatment | brjtannica [229] => cancer | definition, causes, types, & treatment | brktannica [230] => cancer | definition, causes, types, & treatment | brotannica [231] => cancer | definition, causes, types, & treatment | br9tannica [232] => cancer | definition, causes, types, & treatment | br8tannica [233] => cancer | definition, causes, types, & treatment | brirannica [234] => cancer | definition, causes, types, & treatment | brifannica [235] => cancer | definition, causes, types, & treatment | brigannica [236] => cancer | definition, causes, types, & treatment | briyannica [237] => cancer | definition, causes, types, & treatment | bri6annica [238] => cancer | definition, causes, types, & treatment | bri5annica [239] => cancer | definition, causes, types, & treatment | britznnica [240] => cancer | definition, causes, types, & treatment | britsnnica [241] => cancer | definition, causes, types, & treatment | britwnnica [242] => cancer | definition, causes, types, & treatment | britqnnica [243] => cancer | definition, causes, types, & treatment | britabnica [244] => cancer | definition, causes, types, & treatment | britamnica [245] => cancer | definition, causes, types, & treatment | britajnica [246] => cancer | definition, causes, types, & treatment | britahnica [247] => cancer | definition, causes, types, & treatment | britanbica [248] => cancer | definition, causes, types, & treatment | britanmica [249] => cancer | definition, causes, types, & treatment | britanjica [250] => cancer | definition, causes, types, & treatment | britanhica [251] => cancer | definition, causes, types, & treatment | britannuca [252] => cancer | definition, causes, types, & treatment | britannjca [253] => cancer | definition, causes, types, & treatment | britannkca [254] => cancer | definition, causes, types, & treatment | britannoca [255] => cancer | definition, causes, types, & treatment | britann9ca [256] => cancer | definition, causes, types, & treatment | britann8ca [257] => cancer | definition, causes, types, & treatment | britannixa [258] => cancer | definition, causes, types, & treatment | britanniva [259] => cancer | definition, causes, types, & treatment | britannifa [260] => cancer | definition, causes, types, & treatment | britannida [261] => cancer | definition, causes, types, & treatment | britannicz [262] => cancer | definition, causes, types, & treatment | britannics [263] => cancer | definition, causes, types, & treatment | britannicw [264] => cancer | definition, causes, types, & treatment | britannicq ) </h1> </body>