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neoplasm
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Neoplasm
Neoplasm is an abnormal mass of tissue as a result of neoplasia. Neoplasia ("new growth" in Greek) is the abnormal proliferation of cells. Prior to neoplasia, cells often undergo an abnormal pattern of growth, such as metaplasia or dysplasia. However, metaplasia or dysplasia do not always progress to neoplasia. The growth of neoplastic cells exceeds and is not coordinated with that of the normal tissues around it. The growth persists in the same excessive manner even after cessation of the stimuli. It usually causes a lump or tumor. Neoplasms may be benign, pre-malignant (carcinoma in situ) or malignant (cancer).
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Tumor
Ein Tumor – von lat.: tumor, -oris, masc. (Plural: Tumoren, umgangssprachlich auch Tumore) (Geschwulst, Schwellung) im weiteren Sinn ist jede Zunahme eines Gewebsvolumens unabhängig von der Ursache. Synonyme in einer zweiten, engeren Bedeutung sind die Begriffe Neoplasie („Neubildung“) und „Gewächs“.
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Néoplasie
Le terme néoplasie (littéralement : nouvelle croissance) désigne une formation nouvelle — le néoplasme — qui se développe par prolifération cellulaire et qui présente une organisation structurale et une coordination fonctionnelle faible, voir nulle avec le tissu environnant. Le néoplasme est le terme utilisé en médecine pour désigner une tumeur ou un cancer.
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Neoplasi
Neoplasi är en autonom, irrversibel, tumörartad nytillväxt av celler utan fysiologisk funktion. En neoplasi är således en grupp av celler som förlorat sin normala tillväxtreglering, orsaken kan vara en mutation i arvsmassan orsakad av virusinfektion, elektromagnetisk strålning med kort våglängd (till exempel gammastrålning) eller kemikalier.
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Neoplasia
Neoplasia (neo= novo + plasia = tecido) é o termo que designa alterações celulares que acarretam um crescimento exagerado destas células, ou seja, proliferação celular anormal, sem controle e autônoma, na qual reduzem ou perdem a capacidade de se diferenciar, em consequência de mudanças nos genes que regulam o crescimento e a diferenciação celulares. A neoplasia pode ser maligna ou benigna.
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