The incidence of specific solid tumors in Down's syndrome (DS) is not well established.
Testicular germ cell tumors (TGCT) might be increased in this population.
The presence of TGCT among male subjects from the French department of Corrèze was recorded and literature on the subject reviewed.
A total of 120 living children and adults with DS and 17 pregnancies (12 births and 5 therapeutic abortions) were examined over an 8-year period (1987-1994).
Three TGCT were diagnosed.
A seminoma and an embryonal carcinoma were observed in two young adults and an intratubular germ cell neoplasm in a 22-week-old fetus.
Because testicular tumors occur at an incidence rate of 4 cases per 100,000 person-years in the general population, these observations suggest a clearly increased risk of developing TGCT in the DS population.
In addition, a review of the literature also shows an excess of TGCT in this population.
Cryptorchidism alone, which is prevalent in individuals with DS, cannot explain this significantly increased incidence of TCGT.
The authors hypothesize that an excess of luteinizing hormone and follicle-stimulating hormone gonadotropins and overexpression of the Ets-2 gene through gene dosage effect could predispose patients with DS to the development of TGCT.
Surveillance of the gonads of male patients with DS is recommended. (...)
Mots-clés Pascal : Mongolisme, Trisomie, Aneuploïdie, Aberration chromosomique, Chromosome G21 anormal, Chromosome anormal, Tumeur germinale, Testicule, Incidence, Epidémiologie, Corrèze, Limousin, France, Europe, Etude cas, Revue bibliographique, Foetus, Adulte, Homme, Maladie congénitale, Tumeur maligne, Testicule pathologie, Appareil génital mâle pathologie
Mots-clés Pascal anglais : Down syndrome, Trisomy, Aneuploidy, Chromosomal aberration, Abnormal chromosome G21, Abnormal chromosome, Germ cell tumor, Testicle, Incidence, Epidemiology, Correze, Limousin, France, Europe, Case study, Bibliographic review, Fetus, Adult, Human, Congenital disease, Malignant tumor, Testicular diseases, Male genital diseases
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0455761
Code Inist : 002B20B02. Création : 03/02/1998.