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Pituitary function in human pseudocyesis.

G Forsbach, A Güitron, M Munoz

    Journal of Endocrinological Investigation
    |February 1, 1987
    PubMed
    Summary
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    Pseudocyesis, or phantom pregnancy, involves hormonal testing to understand amenorrhea. Research suggests neurotransmitter pathway abnormalities may affect pituitary hormone secretion in these cases.

    Area of Science:

    • Reproductive Endocrinology
    • Neuroendocrinology

    Background:

    • Pseudocyesis is a rare condition characterized by the belief of pregnancy without conception, often accompanied by amenorrhea.
    • Understanding the hormonal and pituitary function in pseudocyesis is crucial for diagnosis and management.

    Observation:

    • Two women with pseudocyesis underwent endometrial biopsy, hormonal level assessment, and dynamic pituitary testing.
    • Basal hormone levels (prolactin, TSH, estradiol, progesterone, FSH, LH) and endometrial histology were evaluated.
    • Pituitary response to GnRH, TRH, metoclopramide, and estradiol benzoate was assessed and compared to women with hypothalamic amenorrhea.

    Findings:

    • Endometrial biopsies showed a proliferative endometrium in both pseudocyesis patients.
    • Pituitary responses to dynamic testing were normal in pseudocyesis patients and those with hypothalamic amenorrhea.

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  • A normal luteinizing hormone (LH) positive feedback to estradiol benzoate was observed in pseudocyesis patients.

    • Implications:

    • The amenorrhea in pseudocyesis is not linked to a persistent corpus luteum or chronic hyperprolactinemia.
    • Findings suggest potential alterations in neurotransmitter pathways affecting pituitary hormone secretion in pseudocyesis.
    • Further research with larger patient cohorts is needed to confirm the proposed neuroendocrine mechanisms.