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Ovaries01:26

Ovaries

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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.
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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...
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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...
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Surgical interventions for inflammatory bowel disease (IBD), which includes ulcerative colitis and Crohn's disease, are essential in managing symptoms and addressing complications. The selection of surgical procedures is contingent upon the specific conditions and complications that stem from these illnesses.
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The uterine or fallopian tubes function as the conduit through which oocytes travel from the ovaries to the uterus. Each fallopian tube measures approximately 10 to 13 cm long and is anatomically divided into the infundibulum, ampulla, isthmus, and interstitial part (or intramural segment). The infundibulum is characterized by its funnel shape and features extensions called fimbriae which reach towards the peritoneal cavity. These fimbriae play a critical role during ovulation as they extend...
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Related Experiment Video

Updated: Feb 18, 2026

Surgical Techniques to Optimize Ovarian Reserve during Laparoscopic Cystectomy for Ovarian Endometrioma
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Colo-ovarian fistula.

Matthew Rosenzweig1, Jessica Marshall1, Ronald A White2

  • 1Hackensack University Medical Center-Palisades, North Bergen, NJ 07047,USA.

Journal of Surgical Case Reports
|November 29, 2017
PubMed
Summary

Colo-ovarian fistula, a rare complication of diverticulitis, requires prompt diagnosis and surgical management. This case highlights successful en-bloc resection of the sigmoid colon and ovary for this rare condition.

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Area of Science:

  • Gastroenterology
  • Gynecologic Oncology

Background:

  • Colo-ovarian fistula is an uncommon condition, often arising as a complication of diverticulitis.
  • This abstract presents a rare case of a 54-year-old female diagnosed with colo-ovarian fistula.

Observation:

  • The patient presented with symptoms indicative of a colo-ovarian fistula.
  • Initial diagnostic imaging and studies were crucial in identifying the fistula's extent and origin.

Findings:

  • En-bloc resection of the sigmoid colon and affected ovary was performed as the primary surgical intervention.
  • The surgical approach aimed for complete removal of the fistulous tract and involved structures.

Implications:

  • This case contributes to the limited literature on colo-ovarian fistulas, particularly those secondary to diverticulitis.
  • The described workup and treatment plan offer valuable insights for managing similar rare clinical scenarios.