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Related Concept Videos

Menopause01:28

Menopause

Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
Hormonal Regulation of the Menstrual Cycle01:22

Hormonal Regulation of the Menstrual Cycle

The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH release.
Hormonal Control of the Ovarian Cycle01:30

Hormonal Control of the Ovarian Cycle

The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle.  At puberty, GnRH secretion increases in both frequency and...
Disorders of the Female Reproductive System01:24

Disorders of the Female Reproductive System

The female reproductive system can be affected by several disorders, including Premenstrual Syndrome (PMS), Premenstrual Dysphoric Disorder (PMDD), endometriosis, and various forms of cancer. PMS and PMDD are cyclical conditions that cause physical and emotional distress, with symptoms that include edema, mood swings, and food cravings. PMDD is a more severe form of PMS characterized by increased symptom severity that peaks during the luteal phase and tends to improve or resolve shortly after...
Mitral Valve Prolapse III: Nursing Management01:19

Mitral Valve Prolapse III: Nursing Management

The nursing management of Mitral Valve Prolapse, or MVP, centers around patient education, symptom monitoring, and lifestyle modifications.Patient Education on MVP Diagnosis and Heredity: Nurses should provide comprehensive education about MVP, a condition where the mitral valve does not close appropriately during heartbeats. This education often includes the condition's pathophysiology, symptoms, and potential complications, like arrhythmias or mitral regurgitation. Though not fully...
Hormonal Regulation01:33

Hormonal Regulation

The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.

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Related Experiment Video

Updated: May 21, 2026

An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause
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Management of postmenopausal virilization.

Macarena Alpañés1, José M González-Casbas, Juan Sánchez

  • 1University of Alcalá and Hospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria and Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas, E-28034 Madrid, Spain.

The Journal of Clinical Endocrinology and Metabolism
|June 7, 2012
PubMed
Summary
This summary is machine-generated.

Postmenopausal virilization, often due to ovarian hyperthecosis, requires careful diagnosis. Selective venous sampling is crucial for identifying the androgen excess source, guiding surgical treatment for hyperandrogenism.

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Area of Science:

  • Endocrinology
  • Gynecology

Background:

  • Hyperandrogenism in postmenopausal women can manifest as mild hirsutism or frank virilization.
  • Virilization suggests a specific source of androgen excess, potentially an androgen-secreting tumor or benign condition.

Observation:

  • A 68-year-old postmenopausal woman presented with progressive hirsutism and frontal balding over 8 years, accompanied by hyperandrogenemia.
  • Initial imaging revealed a right adrenal nodule but normal ovaries; however, selective venous sampling indicated an ovarian source of androgen excess.

Findings:

  • The patient was diagnosed with bilateral ovarian hyperthecosis after surgery.
  • Post-surgical normalization of androgen levels confirmed the ovarian origin of hyperandrogenism.

Implications:

  • Diagnosing postmenopausal hyperandrogenism is challenging, as imaging can be misleading.
  • Combined adrenal and ovarian venous sampling is essential for pinpointing the androgen source.
  • Distinguishing benign from malignant causes of virilization relies on detailed clinical history and diagnostic procedures.