{"id":7378,"date":"2026-08-27T06:00:00","date_gmt":"2026-08-27T06:00:00","guid":{"rendered":"https:\/\/www.belodonte.es\/?p=7378"},"modified":"2026-06-23T08:11:28","modified_gmt":"2026-06-23T08:11:28","slug":"ameloblastoma-que-es-com-es-tracta-quirurgicament","status":"publish","type":"post","link":"https:\/\/www.belodonte.es\/ca\/ameloblastoma-que-es-com-es-tracta-quirurgicament\/","title":{"rendered":"Ameloblastoma: qu\u00e8 \u00e9s i com es tracta quir\u00fargicament"},"content":{"rendered":"\n

L’ameloblastoma<\/strong> \u00e9s el tumor odontog\u00e8nic (originat en els teixits formadors de la dent) m\u00e9s freq\u00fcent entre les lesions de comportament agressiu localitzat que afecten els maxil\u00b7lars. Encara que \u00e9s histol\u00f2gicament benigne, el seu comportament cl\u00ednic \u00e9s localment agressiu i infiltrant, amb una notable tend\u00e8ncia a la recidiva si el tractament quir\u00fargic inicial no \u00e9s adequat.<\/p>\n\n\n\n

Con\u00e8ixer les seves caracter\u00edstiques, la seva forma de presentaci\u00f3 i les opcions de tractament disponibles \u00e9s fonamental per a entendre per qu\u00e8 aquesta lesi\u00f3 requereix un maneig quir\u00fargic especialitzat des del primer diagn\u00f2stic.<\/p>\n\n\n\n

Qu\u00e8 \u00e9s exactament l’ameloblastoma?<\/h2>\n\n\n\n

L’ameloblastoma \u00e9s una neopl\u00e0sia que s’origina a partir de l’epiteli odontog\u00e8nic (les restes de teixit embrionari relacionats amb la formaci\u00f3 de les dents que persisteixen en els maxil\u00b7lars despr\u00e9s de completar-se la odontog\u00e8nesis).<\/p>\n\n\n\n

Encara que es classifica com a tumor benigne des del punt de vista histol\u00f2gic, el seu comportament biol\u00f2gic difereix notablement del d’altres lesions benignes: creix de manera lenta, per\u00f2 progressiva, infiltra l’os esponj\u00f3s circumdant molt m\u00e9s enll\u00e0 dels seus l\u00edmits radiol\u00f2gics aparents, i t\u00e9 una capacitat de recidiva local elevada quan el tractament quir\u00fargic no inclou un marge de seguretat adequat.<\/p>\n\n\n\n

En una proporci\u00f3 molt redu\u00efda de casos (inferior al 2%) pot presentar comportament maligne amb capacitat de met\u00e0stasi, la qual cosa subratlla la import\u00e0ncia d’un diagn\u00f2stic i seguiment rigorosos.<\/p>\n\n\n\n

On es localitza amb m\u00e9s freq\u00fc\u00e8ncia i a qui afecta?<\/h2>\n\n\n\n

L’ameloblastoma es localitza en la mand\u00edbula en aproximadament el 80% dels casos, amb prefer\u00e8ncia marcada per la regi\u00f3 de l’angle i la branca mandibular, mentre que el 20% restant apareix en el maxil\u00b7lar superior.<\/p>\n\n\n\n

Pot presentar-se a qualsevol edat, encara que el seu pic d’incid\u00e8ncia se situa entre la tercera i la cinquena d\u00e8cada de la vida, sense una predilecci\u00f3 de sexe clarament establerta en la majoria de les s\u00e8ries.<\/p>\n\n\n\n

\u00c9s una lesi\u00f3 rara, amb una incid\u00e8ncia estimada d’aproximadament 0,5 casos per mili\u00f3 d’habitants a l’any, la qual cosa explica que molts pacients i professionals no especialitzats no estiguin familiaritzats amb aquesta entitat fins que s’enfronten a un cas concret.<\/p>\n\n\n\n

Quins s\u00edmptomes produeix l’ameloblastoma?<\/h2>\n\n\n\n

Una de les caracter\u00edstiques cl\u00edniques m\u00e9s rellevants de l’ameloblastoma \u00e9s el seu curs silenci\u00f3s en les fases inicials. El tumor pot cr\u00e9ixer durant mesos o fins i tot anys sense produir s\u00edmptomes evidents, la qual cosa explica que en molts casos es detecti de manera incidental en una radiografia panor\u00e0mica realitzada per un altre motiu, o quan ja ha aconseguit una grand\u00e0ria considerable.<\/p>\n\n\n\n

Quan produeix s\u00edmptomes, els m\u00e9s freq\u00fcents s\u00f3n una tumefacci\u00f3 indolora i de creixement lent en la mand\u00edbula o el maxil\u00b7lar, una expansi\u00f3 visible de la cortical \u00f2ssia (l’os es bomba cap a fora a mesura que el tumor creix en l’interior), mobilitat dental sense causa periodontal evident en les dents adjacents a la lesi\u00f3, i en casos avan\u00e7ats, deformitat facial visible o, amb menor freq\u00fc\u00e8ncia, dolor quan es produeix una fractura patol\u00f2gica de l’os afeblit pel tumor.<\/p>\n\n\n\n

Com es diagnostica l’ameloblastoma?<\/h2>\n\n\n\n

El diagn\u00f2stic combina troballes radiol\u00f2giques caracter\u00edstiques amb la confirmaci\u00f3 histol\u00f2gica mitjan\u00e7ant bi\u00f2psia, sent aquesta \u00faltima imprescindible per a establir el diagn\u00f2stic definitiu.<\/p>\n\n\n\n

En la radiografia panor\u00e0mica i el CBCT (tomografia computada de feix c\u00f2nic), l’ameloblastoma es presenta t\u00edpicament com una lesi\u00f3 radioll\u00f9cida (m\u00e9s fosca que l’os circumdant) multilocular, amb un patr\u00f3 descrit cl\u00e0ssicament com \u00aben bombolles de sab\u00f3\u00bb o \u00aben bresca d’abella\u00bb, encara que en lesions de menor grand\u00e0ria pot presentar-se com una imatge unilocular m\u00e9s simple.<\/p>\n\n\n\n

La bi\u00f2psia \u00e9s absolutament necess\u00e0ria perqu\u00e8 l’aspecte radiol\u00f2gic, encara que suggestiu, no \u00e9s exclusiu de l’ameloblastoma i pot superposar-se amb el d’altres lesions qu\u00edstiques i tumorals dels maxil\u00b7lars amb un pron\u00f2stic i un tractament completament diferents.<\/p>\n\n\n\n

L’estudi histopatol\u00f2gic permet a m\u00e9s identificar el subtipus espec\u00edfic d’ameloblastoma (fol\u00b7licular, plexiforme, unic\u00edstic, desmopl\u00e0stic, entre altres), la qual cosa t\u00e9 implicacions directes sobre el comportament esperat i l’estrat\u00e8gia quir\u00fargica m\u00e9s adequada.<\/p>\n\n\n\n

Quines s\u00f3n les opcions de tractament quir\u00fargic?<\/h2>\n\n\n\n

El tractament de l’ameloblastoma \u00e9s exclusivament quir\u00fargic, i l’elecci\u00f3 de la t\u00e8cnica dep\u00e8n fonamentalment del subtipus histol\u00f2gic, la grand\u00e0ria de la lesi\u00f3 i la seva localitzaci\u00f3.<\/p>\n\n\n\n

El tractament conservador (enucleaci\u00f3 amb curetatge de l’os adjacent) pot considerar-se en el subtipus unic\u00edstic, especialment en lesions petites i ben delimitades en pacients joves, encara que comporta taxes de recidiva m\u00e9s elevades que el tractament radical.<\/p>\n\n\n\n

El tractament radical, que consisteix en la resecci\u00f3 en bloc del tumor amb un marge d’os sa circumdant (habitualment d’1 a 1,5 cent\u00edmetres), \u00e9s el tractament d’elecci\u00f3 per als subtipus s\u00f2lid, multiqu\u00edstic i desmopl\u00e0stic, donada la seva m\u00e9s capacitat infiltrativa local.<\/p>\n\n\n\n

En lesions de gran grand\u00e0ria que afecten una porci\u00f3 significativa de la mand\u00edbula, la resecci\u00f3 pot requerir reconstrucci\u00f3 immediata o diferida mitjan\u00e7ant empelts ossis microvascularitzats (habitualment de peron\u00e9) per a restaurar la continu\u00eftat mandibular i la funci\u00f3.<\/p>\n\n\n\n

Quines taxes de recidiva existeixen i de qu\u00e8 depenen?<\/h2>\n\n\n\n

Les taxes de recidiva de l’ameloblastoma varien de forma molt significativa segons el tipus de tractament aplicat.<\/p>\n\n\n\n

Amb tractament conservador (enucleaci\u00f3 i curetatge), les taxes de recidiva publicades en la literatura oscil\u00b7len entre el 50% i el 90% segons les s\u00e8ries, especialment en els subtipus histol\u00f2gics m\u00e9s agressius.<\/p>\n\n\n\n

Amb tractament radical (resecci\u00f3 amb marge de seguretat adequat), les taxes de recidiva es redueixen dr\u00e0sticament, situant-se per sota del 15% en la majoria dels estudis publicats.<\/p>\n\n\n\n

Aquest contrast tan marcat entre totes dues estrat\u00e8gies terap\u00e8utiques explica per qu\u00e8 la decisi\u00f3 quir\u00fargica inicial \u00e9s absolutament determinant en el pron\u00f2stic a llarg termini, i per qu\u00e8 la planificaci\u00f3 del tractament ha de realitzar-se sempre per un equip amb experi\u00e8ncia espec\u00edfica en patologia tumoral dels maxil\u00b7lars.<\/p>\n\n\n\n

Quin seguiment requereix un pacient tractat d’ameloblastoma?<\/h2>\n\n\n\n

Donada la seva tend\u00e8ncia a la recidiva, fins i tot anys despr\u00e9s del tractament inicial, el seguiment a llarg termini \u00e9s una part essencial i inseparable del tractament de l’ameloblastoma.<\/p>\n\n\n\n

Les guies cl\u00edniques recomanen controls radiol\u00f2gics peri\u00f2dics (habitualment mitjan\u00e7ant ortopantomografia o CBCT) durant un m\u00ednim de cinc a deu anys despr\u00e9s de la cirurgia, amb una freq\u00fc\u00e8ncia inicial m\u00e9s estreta (cada sis mesos durant els primers dos anys) que es va espaiant progressivament si no apareixen signes de recidiva.<\/p>\n\n\n\n

La majoria de les recidives es detecten en els primers cinc anys despr\u00e9s del tractament, encara que s’han descrit casos de recidiva tardana que justifiquen mantenir la vigil\u00e0ncia fins i tot passada aquesta primera d\u00e8cada.<\/p>\n\n\n\n

Si t’han detectat una lesi\u00f3 en el maxil\u00b7lar o la mand\u00edbula durant una radiografia de rutina, no t’alarmis, per\u00f2 tampoc ho deixis passar. El diagn\u00f2stic mitjan\u00e7ant bi\u00f2psia \u00e9s l’\u00fanic cam\u00ed per a saber exactament quin tipus de lesi\u00f3 \u00e9s i quin \u00e9s el tractament m\u00e9s adequat per al teu cas.<\/p>\n","protected":false},"excerpt":{"rendered":"

L’ameloblastoma \u00e9s el tumor odontog\u00e8nic (originat en els teixits formadors de la dent) m\u00e9s freq\u00fcent entre les lesions de comportament agressiu localitzat que afecten els maxil\u00b7lars. Encara que \u00e9s histol\u00f2gicament benigne, el seu comportament cl\u00ednic \u00e9s localment agressiu i infiltrant, […]<\/p>\n","protected":false},"author":3,"featured_media":7376,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[32],"tags":[],"class_list":["post-7378","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cirugia-oral"],"yoast_head":"\nAmeloblastoma: qu\u00e8 \u00e9s i com es tracta quir\u00fargicament - Cl\u00ednica Belodonte<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.belodonte.es\/?p=7346\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ameloblastoma: qu\u00e8 \u00e9s i com es tracta quir\u00fargicament - Cl\u00ednica Belodonte\" \/>\n<meta property=\"og:description\" content=\"L’ameloblastoma \u00e9s el tumor odontog\u00e8nic (originat en els teixits formadors de la dent) m\u00e9s freq\u00fcent entre les lesions de comportament agressiu localitzat que afecten els maxil\u00b7lars. 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