klinefelter syndrome…

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47 x-x-y syndrome, klinefelter syndrome, condition that occurs in men, a result of an extra x chromosome, most common symptom is infertility, humans have 46 chromosomes, contain all of a person's genes, dna, two of these chromosomes, sex chromosomes, determine a person's gender, the sex chromosomes in females, x chromosomes, written, xx, males have an x, a y chromosome, written, xy, two sex chromosomes help a person develop fertility, sexual characteristics of gender, klinefelter syndrome results in males, at least one extra x chromosome, occurs, a result of one extra x, written, xxy, klinefelter syndrome is found in, 1 out of every 500-1,000 newborn males, women, pregnancies after age 35, slightly more likely to have a boy, syndrome than younger women, have the following signs, firm testicles, small penis, sparse pubic, armpit, facial hair, sexual problems, enlarged breasts, gynecomastia, tall stature, abnormal body proportions, long legs, short trunk, adults, infertility, school-age children brought in to evaluate learning disabilities, following test results found, karyotyping, 47 xxy, semen count, serum testosterone, serum luteinizing hormone, serum follicle stimulating hormone, serum estradiol levels, a type of estrogen, testosterone therapy, achieve the following, increase strength, improve appearance of muscles, grow body hair, improve mood, self esteem, increase energy, sex drive, improve concentration, most patients, not able to father children, cases of men, an extra x fathering healthy offspring, the aide of infertility specialists, klinefelter syndrome association, reached at po box 119, roseville, ca, 95678-0119, most patients, expect a normal, productive life, social, educational supports, patients reach potential, syndrome is associated, an increased risk of breast cancer, extragonadal germ cell tumor, a rare tumor, lung disease, varicose veins, osteoporosis, an increased risk, autoimmune disorder lupus, rheumatoid arthritis, sjogren's syndrome, learning disabilities, common, despite normal, high iq, risks of dyslexia, attention deficient hyperactivity disorder, depression higher, taurodontism, the teeth have enlarged pulp, surface thinning, very common in klinefelter syndrome, diagnosed by dental x-rays, a boy fails to develop secondary sexual characteristics at puberty, a genetics counselor, evaluate, explain abnormal chromosome findings, wish to consult, an endocrinologist, infertility specialist.