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Turner’s syndrome mosaicism 45X/47XXX: An interesting natural history

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Abstract

Mosaicism 45X/47XXX is a sporadic form of ovarian dysgenesis. Many of the cases previously described were characterized by a variable phenotype expression. We here report the case of a 33-yr-old woman with recent secondary amen-orrhea, weight loss and breast regression. Her menarche had occurred at the age of 11 yr and 6 months and her menstrual cycles had been regular until the age of 28; then, oligomenorrhea and hypertricosis developed. A pelvic ultrasound showed enlarged polycystic-like ovaries and normal uterus. She was treated with ethynil-estradiol and cyproterone acetate for one year. At the age of 31 yr, she underwent a pelvic ultrasound — which revealed normal volume of the ovaries — and hormonal assays including FSH (69 UI/l), LH (113 UI/l), 17β-estradiol (88 pg/ml), plasma androgens and cortisol levels within normal ranges. No organ-specific autoantibodies toward ovaries, steroid-producing cells or adrenals were found. At the age of 33 yr, there was ultrasound evidence of streak-like ovaries. The patient’s height was 145 cm and her weight 45 kg. She had normal female external genitalia, abnormal upper-to-lower body segment ratio, webbed neck, low posterior hair line, cubitus valgus, short and asymmetrical 4th metacarpi, hallux with lateral deviation and moderate scoliosis. No increase in ovarian steroids were found after GnRH-analogue triptorelin (0,1 mg sc) administration. The karyotype analysis on peripheral blood lymphocytes showed a mosaic 45X (90% cells) and 47XXX (10% cells). Diagnostic pelviscopy confirmed streak gonads. Chronic lymphocytic thyroiditis was diagnosed but no cardiovascular or kidney abnormalities were found. A neuro-psychological evaluation revealed emotional and social immaturity, disorders in motorial coordination, visual-spatial organization, as well as reading difficulties and impaired complex phrase construction. The presence of several somatic features of Turner’s syndrome, neuro-psychological disorders and an interesting natural history probably depended on the quantitative proportion of 45X to 47XXX cell-lines in different tissues and organs. Estrogen and progestin replacement therapy led to weight gain, re-appearance of secondary sexual characteristics and a mild improvement in mental equilibrium.

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Authors and Affiliations

  1. Department of Molecular and Clinical Endocrinology and Oncology, Piazza degli Artisti 17, 80129, Napoli, Italy

    L. Tauchmanovà,  Riccardo Rossi, M. Pulcrano & G. Lombardi

  2. Ultrasonography Unit, “Cotugno” Hospital, Naples, Italy

    L. Tarantino

  3. Department of Relationship Sciences, “Federico II” University, Italy

    C. Baldi

Authors
  1. L. Tauchmanovà
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  2. Riccardo Rossi
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  3. M. Pulcrano
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  4. L. Tarantino
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  5. C. Baldi
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  6. G. Lombardi
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Correspondence to Riccardo Rossi.

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Tauchmanovà, L., Rossi, R., Pulcrano, M. et al. Turner’s syndrome mosaicism 45X/47XXX: An interesting natural history. J Endocrinol Invest 24, 811–815 (2001). https://doi.org/10.1007/BF03343932

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