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Related Concept Videos

Ovarian Cycle01:27

Ovarian Cycle

The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle length...
Oogenesis02:07

Oogenesis

In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
Oogenesis01:22

Oogenesis

Oogenesis,  the process of developing egg cells (female gametes), occurs within the ovaries and is fundamental to female fertility. This sequence begins during fetal development when diploid oogonia in the developing ovaries undergo mitotic divisions to produce primary oocytes. By birth, these primary oocytes enter prophase I of meiosis but become arrested in this stage, remaining suspended until puberty.
Each primary oocyte is surrounded by a layer of pre-granulosa cells, forming what is known...
Ovaries01:26

Ovaries

The ovaries are roughly the size of almonds and measure approximately 2 to 3 centimeters in length. These paired structures are situated within the pelvic region and are anchored by the mesovarium—a peritoneal extension that also connects them to the wider structure of the broad ligament. The support system extends to the suspensory ligament, housing blood and lymphatic vessels. In addition, the ovarian ligament tethers the ovaries to the uterus.
On the ovarian surface, a layer of cuboidal...
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...
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...

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Related Experiment Video

Updated: May 25, 2026

Surgical Techniques to Optimize Ovarian Reserve during Laparoscopic Cystectomy for Ovarian Endometrioma
11:29

Surgical Techniques to Optimize Ovarian Reserve during Laparoscopic Cystectomy for Ovarian Endometrioma

Published on: January 22, 2022

Complex ovarian pregnancy.

Costanza Chiapponi1, Oria Trifoglio, Roberto Chiapponi

  • 1From the Department of Surgery, Ludwig-Maximilians-University, Munich, Germany; and the Departments of Obstetrics and Gynaecology, Santi Antonio e Biagio e Cesare Arrigo Hospital of Alessandria, and Santo Spirito Hospital, Alessandria, Italy.

Obstetrics and Gynecology
|January 25, 2012
PubMed
Summary
This summary is machine-generated.

Ovarian pregnancy is rare and usually resolves early. This case highlights a mummified ovarian pregnancy persisting asymptomatically for years, presenting as abdominal swelling.

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Quantitation of Intra-peritoneal Ovarian Cancer Metastasis
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Quantitation of Intra-peritoneal Ovarian Cancer Metastasis

Published on: July 18, 2016

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Last Updated: May 25, 2026

Surgical Techniques to Optimize Ovarian Reserve during Laparoscopic Cystectomy for Ovarian Endometrioma
11:29

Surgical Techniques to Optimize Ovarian Reserve during Laparoscopic Cystectomy for Ovarian Endometrioma

Published on: January 22, 2022

Quantitation of Intra-peritoneal Ovarian Cancer Metastasis
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Quantitation of Intra-peritoneal Ovarian Cancer Metastasis

Published on: July 18, 2016

Area of Science:

  • Reproductive Medicine
  • Gynecology
  • Obstetrics

Background:

  • Ovarian pregnancy is a rare ectopic gestation, typically resolving spontaneously in the first trimester.
  • Rupture can lead to severe hemoperitoneum and hypovolemic shock, necessitating prompt diagnosis and management.
  • High-resolution transvaginal ultrasonography is the primary diagnostic modality, often followed by laparoscopic intervention.

Observation:

  • A unique case of ovarian pregnancy was observed in southeast Madagascar.
  • Laparotomy revealed a fully developed, mummified fetus within the right ovary.
  • Remarkably, the ovarian capsule remained intact without rupture, and the patient exhibited no signs of intra-abdominal bleeding or symptoms.

Findings:

  • This case demonstrates the potential for an aborted ovarian pregnancy to persist asymptomatically for an extended period.
  • The absence of rupture and symptoms, despite a mummified fetus, challenges typical clinical presentations.
  • Abdominal swelling was the sole presenting complaint, indicating a chronic, contained process.

Implications:

  • Ovarian pregnancies, even when aborted, can present atypically, persisting long-term without acute complications.
  • Clinicians should consider chronic, asymptomatic ovarian pregnancies in the differential diagnosis of unexplained abdominal swelling.
  • This case underscores the importance of thorough gynecological evaluation in persistent, unusual abdominal complaints.