Ovarian Torsion with Dr. Jennifer Dietrich

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Inside this episode

Kai, the Library's AI content creator, listened to this episode and mapped who's speaking, the chapters, key claims, and cases. Every item links to the exact moment in the recording.

AI-enriched

Who's speaking

  • Todd Ponsky — host
  • Jennifer Dietrich — guest

Chapters

  • 0:00Introduction and Initial Evaluation — Introduction of Dr. Jennifer Dietrich and discussion of initial approach to evaluating a 13-year-old with lower abdominal pain, including history-taking, pregnancy testing, and the role of ultrasound.
  • 3:23Ultrasound Findings and Blood Flow — Detailed discussion of ultrasound findings in ovarian torsion, including ovarian asymmetry, follicle distribution, and the critical teaching that presence of blood flow does not reliably exclude torsion.
  • 7:04Diagnostic Considerations and Cyst Size — Discussion of cyst size thresholds (5-6 cm), torsion in prepubertal girls with normal ovaries, and factors that may predispose to torsion including ligamentous support and pubertal changes.
  • 11:12Malignancy Concerns and Advanced Imaging — Evaluation for malignancy including complex ultrasound features, tumor markers (AFP, beta-HCG, LDH, CA-125), and limited roles for CT and MRI in specific clinical scenarios.
  • 15:00Timing of Surgery and Clinical Diagnosis — Discussion of surgical timing emphasizing that ovarian torsion is a clinical diagnosis, the importance of not delaying surgery based on blood flow findings, and the option to observe equivocal cases briefly in hospital.
  • 21:09Surgical Management and Ovarian Salvage — Surgical approach including detorsion, cystectomy technique for ovarian and paratubal cysts, and the critical principle of attempting ovarian salvage even when the ovary appears necrotic (purple/black).
  • 27:50Advanced Techniques: Bivalving and Oophoropexy — Discussion of ovarian bivalving for compartment syndrome-like edema, debulking techniques, and oophoropexy indications including recurrent torsion and single remaining ovary.
  • 34:57Special Scenarios and Unexpected Findings — Management of tubal-ovarian abscess, ectopic pregnancy (salpingostomy technique), and endometriosis recognition in adolescents including the underwater examination technique.
  • 42:22Postoperative Care and Prevention — Postoperative management including same-day discharge criteria, surveillance ultrasound timing (3 months post-op), role of oral contraceptives for functional cysts, and activity restrictions.

Key claims

  • 2:02In all reproductive age females presenting with lower abdominal pain, pregnancy testing is mandatory regardless of sexual activity history — Jennifer Dietrich
  • 4:33Complete absence of blood flow on ultrasound is the most concerning finding and is more reliable than presence of blood flow — Jennifer Dietrich
  • 4:42Presence of blood flow on ultrasound is less reliable and does not exclude torsion because it could represent a torsed tube with preserved ovarian flow — Jennifer Dietrich
  • 6:14Intermittent torsion can occur where the ovary twists and untwists, showing normal flow at the time of ultrasound — Jennifer Dietrich
  • 7:15When ovary is edematous from torsion, follicles become peripheralized to the ovarian periphery due to vascular congestion in the central ovary — Jennifer Dietrich
  • 8:50Cysts 5-6 centimeters or larger increase suspicion for torsion in the setting of symptoms because they make the ovary and tube heavy enough to twist — Jennifer Dietrich
  • 9:31In prepubertal girls, normal ovaries can torse and torsion is the most common reason for gynecologic surgery in this age group — Jennifer Dietrich
  • 10:19There is no specific size cutoff for torsion risk; prepubertal ovaries may be only 1-1.5 cm but can still torse — Jennifer Dietrich
  • 11:39Complex ultrasound features (partly cystic, partly solid) with hypervascular flow on Doppler raise concern for malignancy — Jennifer Dietrich
  • 15:06Tumor markers for pediatric ovarian masses include alpha-fetoprotein, quantitative beta-HCG, lactate dehydrogenase, and CA-125 — Jennifer Dietrich
  • 17:26Salvage rates are higher within the first 24-72 hours of pain onset compared to patients presenting after one week — Jennifer Dietrich
  • 17:52It is impossible to predict which patients have loose versus tight torsion, and tight torsion can develop ischemia quickly — Jennifer Dietrich
  • 18:47Ovarian torsion is a clinical diagnosis; if clinical suspicion is high, surgery should proceed regardless of ultrasound findings — Jennifer Dietrich
  • 18:56Patients with equivocal presentation can be observed in hospital for a few hours to see if they declare themselves, but should not be sent home — Jennifer Dietrich
  • 19:52Classic torsion presentation includes acute onset pain after physical activity (gymnastics, cartwheels), persistent pain unresponsive to over-the-counter measures, with nausea and vomiting — Jennifer Dietrich
  • 21:22Hemorrhagic ovarian cysts are more likely in menstruating females, and menstrual history helps distinguish from torsion — Jennifer Dietrich
  • 22:16For hemorrhagic cysts, Doppler shows no flow within the cyst itself but preserved peripheral flow around the cyst — Jennifer Dietrich
  • 22:51Surgical management includes detorsion and removal of causative lesions (ovarian or paratubal cysts) to eliminate the weight that caused torsion — Jennifer Dietrich
  • 23:16Oophorectomy and salpingo-oophorectomy should be avoided at all times; attempt salvage even of purple, black and blue ovaries — Jennifer Dietrich
  • 24:01Cystectomy rather than simple drainage is performed for non-functional cysts to prevent recurrence, particularly important for paratubal cysts — Jennifer Dietrich
  • 25:21For hemorrhagic cysts, if the entire cyst wall is not removed, the cyst may continue to bleed — Jennifer Dietrich
  • 26:20Even necrotic-appearing ovaries should be salvaged unless the tissue is literally falling apart during detorsion — Jennifer Dietrich
  • 26:47Follow-up studies show return of ovarian function and follicle development even after salvage of necrotic-appearing ovaries, sometimes taking a few months — Jennifer Dietrich
  • 28:02Ovarian bivalving involves making an incision into the ovarian cortex after detorsion to release compartment syndrome-like pressure and improve peripheral blood supply — Jennifer Dietrich
  • 28:48Bivalving is indicated when the ovary remains edematous after detorsion, particularly in normal ovaries without a lesion to remove — Jennifer Dietrich
  • 29:23Ovarian debulking via biopsy may be needed if bivalving alone does not adequately decompress a bulky ovary at risk for re-torsion — Jennifer Dietrich
  • 30:53Oophoropexy is considered in patients who have lost one ovary and present with torsion of the remaining ovary, or in recurrent torsion cases — Jennifer Dietrich
  • 31:18Oophoropexy changes the position of the ovary which may affect future fertility, but preserving the ovary is better than losing it — Jennifer Dietrich
  • 31:54Absorbable suture can be used for oophoropexy to hold the adnexa still for 4-6 weeks during inflammation resolution, minimizing near-term re-torsion risk — Jennifer Dietrich
  • 32:37Clipping the utero-ovarian ligament does not prevent torsion because the ovary can still twist on either the utero-ovarian or infundibulopelvic ligament — Jennifer Dietrich
  • 33:10Oophoropexy techniques include shortening the utero-ovarian ligament, pexing to the pelvic sidewall (away from ureters), or pexing to the posterior uterus — Jennifer Dietrich
  • 35:14For tubal-ovarian abscess, antibiotics should be started and surgical intervention avoided unless the patient is clinically unstable, to prevent spreading infection — Jennifer Dietrich
  • 35:57Ectopic pregnancy can present similarly to ovarian torsion with acute pain and adnexal mass, and may not be visible on transabdominal ultrasound in early pregnancy — Jennifer Dietrich
  • 38:37Ectopic pregnancy is managed with salpingostomy (longitudinal incision in the tube) to remove the pregnancy; the tube is not sutured closed as it heals well without sutures — Jennifer Dietrich
  • 39:57Adolescent endometriosis presents with early lesions that are clear or red rather than the classic blue/black lesions seen in adults — Jennifer Dietrich
  • 40:55Clear endometriosis lesions can be visualized by filling the pelvis with crystalloid and examining underwater with the camera — Jennifer Dietrich
  • 41:52Endometriosis lesions near the ureter or bowel should be excised with cold scissors rather than cauterized — Jennifer Dietrich
  • 42:22Patients meeting postoperative milestones can be discharged within a few hours after laparoscopic surgery for torsion — Jennifer Dietrich
  • 42:57Activity should be limited for 4-6 weeks postoperatively to allow incision healing and avoid hernia formation — Jennifer Dietrich
  • 43:35Oral contraceptives can prevent recurrence if torsion was caused by a functional cyst, but do not prevent torsion from dermoid or paratubal cysts — Jennifer Dietrich
  • 44:32Surveillance ultrasound is performed at 3 months post-surgery as it takes several months for inflammation to resolve, then repeated at 3-6 months if recovery is ongoing, then annually — Jennifer Dietrich

Open questions

  • Why do some patients develop ovarian torsion while others do not - is it related to ligamentous support, connective tissue development, or pubertal timing?
  • How can ultrasound technology be improved to distinguish between loose and tight torsion?
  • What is the optimal timing and frequency of surveillance ultrasound after ovarian torsion surgery?
  • Should pediatric surgeons routinely examine for endometriosis during negative appendectomy cases?
This episode was analyzed and enriched by Kai, the Library's AI content creator. Every item links to the moment it comes from — click a timestamp to listen in context.
Written for:

Ovarian Torsion in Adolescents: Why Blood Flow Doesn't Rule It Out

The episode's main topic retold as a plain-language walkthrough — what it is, why it matters, and what the speakers concluded. Written by Kai from the episode transcript and reviewed before publishing.

For the care team · Explainer · AI-written, human-reviewed

Why This Exists

Ovarian torsion became a distinct surgical emergency because the ovary, unlike most abdominal organs, hangs on a vascular pedicle that can twist. In adolescents, functional ovarian cysts — a normal part of the menstrual cycle — can make the adnexa heavy enough to rotate on its ligamentous supports, cutting off blood supply. The window to salvage fertility is narrow, and the diagnostic tools are unreliable. This is why pediatric and adolescent gynecologists developed a subspecialty approach: the stakes are a teenager's future reproductive capacity, and the imaging lies.

The Core Problem

A 13-year-old gymnast finishes practice, goes home, and develops acute lower abdominal pain with nausea and vomiting 19:52. The differential is broad — appendicitis, ruptured cyst, pelvic inflammatory disease — but ovarian torsion is the diagnosis you cannot afford to miss. The ovary has twisted on its vascular pedicle, and ischemia is progressing. Delay means oophorectomy; speed means salvage.

The clinical challenge is that the most commonly ordered test — pelvic ultrasound with Doppler — is actively misleading. Presence of arterial and venous blood flow does not exclude torsion 4:42. The ovary can show normal flow because the tube alone is torsed, or because the twist is loose, or because the patient has intermittent torsion that untwists between episodes 6:14. "The complete absence of blood flow is the most concerning and is more reliable. The presence of blood flow is actually less reliable, believe it or not, on an ultrasound" [q1]. Radiologists report flow; surgeons operate anyway.

How the Approach Works

The evaluation begins with mandatory pregnancy testing regardless of reported sexual history 2:02, because ectopic pregnancy mimics torsion and changes management. History focuses on pain onset — acute, after physical activity, progressively worsening — and menstrual timing, which helps distinguish hemorrhagic corpus luteum cysts from torsion 21:22.

Ultrasound findings that increase suspicion include ovarian asymmetry, cysts 5-6 cm or larger 8:50, and peripheralized follicles. When the ovary is edematous from vascular congestion, follicles get pushed to the periphery rather than remaining centrally distributed 7:15. But the key teaching is that torsion is a clinical diagnosis 18:47. "If really your clinical suspicion is high, it is a clinical diagnosis, and you should act on that" [q4].

Timing matters. Salvage rates are higher within 24-72 hours of pain onset compared to patients presenting after a week 17:26, but it is impossible to predict which patients have loose versus tight torsion 17:52. The patient with reassuring flow on ultrasound may have a tight twist progressing to infarction. If clinical suspicion is high, surgery proceeds regardless of imaging. Equivocal cases can be observed in hospital for a few hours to see if they declare themselves, but should not be sent home 18:56.

In prepubertal girls, the picture is different. Normal ovaries — sometimes only 1-1.5 cm — can torse without any cyst present 9:31 10:19. Torsion is the most common reason for gynecologic surgery in this age group. There is no size cutoff below which you stop worrying.

Surgical Management

The operation is laparoscopic detorsion with removal of the causative lesion — ovarian cyst or paratubal cyst — to eliminate the weight that allowed torsion 22:51. The critical principle is ovarian salvage. Oophorectomy should be avoided even when the ovary appears purple, black, and necrotic 23:16. "You'd be surprised how many, many purple, black and blue ovaries recover over time" [q8]. Follow-up studies show return of ovarian function and follicle development months after salvage of necrotic-appearing tissue 26:47.

Cystectomy, not simple drainage, is performed for non-functional cysts to prevent recurrence 24:01. Paratubal cysts — identified by seeing the fallopian tube splayed over the cyst — require opening the mesosalpinx and shelling out the entire cyst wall 24:01. Incomplete removal leads to recurrence.

When the ovary remains edematous after detorsion, bivalving — making an incision into the ovarian cortex — releases compartment syndrome-like pressure and improves peripheral blood supply 28:02. This is particularly relevant for normal ovaries that torsed without a lesion to remove 28:48. If bivalving is insufficient, ovarian debulking via biopsy may be needed to reduce bulk and prevent re-torsion 29:23.

Oophoropexy — surgically fixing the ovary in position — is reserved for recurrent torsion or patients who have already lost one ovary and present with torsion of the remaining one 30:53. Techniques include shortening the utero-ovarian ligament or pexing to the pelvic sidewall or posterior uterus 33:10. Absorbable suture can hold the adnexa still for 4-6 weeks while inflammation resolves, minimizing near-term re-torsion risk without permanently altering anatomy 31:54.

Where Practice Is Contested

The decision to salvage a necrotic-appearing ovary is not universally accepted. Older teaching favored oophorectomy for black, dusky ovaries on the assumption they were nonviable. Current evidence supports aggressive salvage unless the tissue is literally disintegrating during manipulation 26:20, but this requires intraoperative judgment and comfort with uncertainty.

When to Involve This Team

Refer immediately for any adolescent with acute lower abdominal pain, ovarian asymmetry on ultrasound, and high clinical suspicion — even with normal Doppler flow. Do not delay for repeat imaging. In prepubertal girls with acute pain and a normal-appearing ovary on ultrasound, maintain a high index of suspicion; normal ovaries torse in this age group. If the diagnosis is equivocal, admit for observation rather than discharging home, and involve gynecology early. The window for salvage is measured in hours, and the cost of delay is permanent.

Takeaways from this story

  • Presence of blood flow on ultrasound does not exclude ovarian torsion; absence of flow is more reliable than presence.
  • Ovarian torsion is a clinical diagnosis — operate on high suspicion regardless of Doppler findings.
  • Salvage even necrotic-appearing ovaries; follow-up shows return of function months later.
  • Perform cystectomy, not drainage, for causative cysts to prevent recurrence and re-torsion.
  • In prepubertal girls, normal ovaries can torse — torsion is the most common gynecologic surgery in this age group.

Topic overview

A clinical discussion on ovarian torsion in pediatric and adolescent patients between Dr. Todd Ponsky (host, pediatric surgeon) and Dr. Jennifer Dietrich (chief of pediatric and adolescent gynecology at Texas Children's Hospital). The conversation covers diagnostic evaluation emphasizing that presence of blood flow on ultrasound does not exclude torsion, surgical management prioritizing ovarian salvage even when the ovary appears necrotic, techniques including cystectomy and ovarian bivalving, and the role of oophoropexy in recurrent cases. Key teaching points include the unreliability of Doppler flow as a negative predictor, the importance of clinical diagnosis over imaging, and conservative surgical approaches to preserve fertility.

Key takeaways

  • Presence of blood flow on ultrasound does NOT exclude torsion; it may represent preserved ovarian flow with torsed tube. (4:42)
  • Ovarian torsion is a clinical diagnosis. If suspicion is high, proceed to surgery regardless of ultrasound findings. (18:47)
  • Always attempt ovarian salvage, even if the ovary appears necrotic. Avoid oophorectomy; function often returns post-detorsion. (23:16)
  • Perform cystectomy (not simple drainage) to remove causative lesions and prevent recurrence, especially for paratubal cysts. (22:51)
  • Consider oophoropexy in recurrent torsion or when the contralateral ovary has been lost to preserve remaining ovarian tissue. (30:53)

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