precancer

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precancer

 [pre´kan-ser]
a condition that tends to become malignant (see cancer). adj., adj precan´cerous.

pre·can·cer

(prē-kan'sĕr),
A lesion from which a malignant neoplasm is believed to develop in a significant number of instances, and that may or may not be recognizable clinically or by microscopic changes in the affected tissue.

precancer

(prē′kăn′sər)
n.
A precancerous condition.

precancer

Premalignant, preneoplasia Any of a broad group of conditions with a malignant predisposition; epithelial precancers may be
1. Glandular–eg, adenomatous hyperplasia–endometrium and adenomatous polyps–colon, stomach, which evolve towards adenocarcinoma of their respective organs or.
2. Squamous–eg, dysplasia of the uterine cervix or other urogenital mucosae; premalignant lesions of mesenchymal origin include prelymphoma and 'presarcoma'–an ad hoc coinage, the latter of which may be due to predisposing factors–eg, osteosarcoma may arise in Paget's disease of bone, radiation, hereditary multiple exostoses, polyostotic fibrous dysplasia, enchondroma, Maffucci's enchondromatosis; osteosarcomas may be induced experimentally by various trauma–chemical–eg, turpentine, mechanical– eg, local pressure, indwelling foreign bodies, ischemia–eg, vessel clamping. Cf Preneoplastic state. See Fragile X syndrome, Hereditary neoplasms, Premalignancy.
Precancer
Chromosome breakage syndromes Bloom syndrome, Fanconi syndrome
Genodermatoses Albinism, dyskeratosis congenita,epidermodysplasia verruciformis, polydysplastic epidermolysis bullosa, Werner syndrome, xeroderma pigmentosa
Hamartomatous syndromes Multiple exostoses, neurofibromatosis, Peutz-Jegher syndrome, tuberous sclerosis, von Hippel-Lindau syndrome
Immunodeficiency syndromes Ataxia-telangiectasia, Wiskott-Aldrich syndrome, X-linked agammaglobulinemia 
.

pre·can·cer

(prē-kan'sĕr)
A lesion from which a malignant neoplasm is believed to develop in a significant number of instances, and which may or may not be recognizable clinically or by microscopic changes in the affected tissue.
References in periodicals archive ?
A single counselling session that brings up the question of the relationship between excess alcohol use and unsafe sexual practices may have an impact, so helping to prevent HIV infection related to unsafe sex, according to an article published recently in the Journal of Acquired Immunodeficiency Syndromes. There are large numbers of studies that report a link between using alcohol and the incidence of sexually transmitted infections (STIs).
Predisposing factors for laryngeal candidiasis include immunodeficiency syndromes, immunosuppressive medications (e.g., chemotherapeutic agents and corticosteroids), nutritional deficiencies, diabetes, previous antibiotic therapy, inhaled corticosteroid therapy, radiation therapy, smoking, reflux disease, trauma, and chemical or thermal injury.
Since then, much of the progress in the field--also called stem cell transplantation--has been paved by investigations in five categories of pediatric conditions: congenital immunodeficiency syndromes, malignancies, bone marrow failure syndromes, hemoglobinopathies, and inborn errors of metabolism.

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