Introduction

Ovarian dermoid cysts, also known as mature cystic teratomas, are among the most common benign ovarian tumors encountered in women of reproductive age. Although these cysts are generally asymptomatic and slow-growing, they can occasionally lead to serious complications, the most significant being ovarian torsion. Torsion occurs when the ovary twists around its vascular pedicle, compromising blood flow and resulting in acute abdominal pain. Prompt surgical intervention is essential to prevent ovarian necrosis and preserve reproductive function.

The advent of laparoscopic surgery has revolutionized the management of gynecological emergencies, including torted ovarian dermoid cysts. Laparoscopic resection offers a minimally invasive alternative to traditional open surgery, providing excellent visualization, faster recovery, reduced postoperative pain, and superior cosmetic outcomes.

Understanding Ovarian Dermoid Cysts

Dermoid cysts originate from germ cells and contain tissues derived from multiple embryonic layers. As a result, they may contain hair, sebaceous material, teeth, bone, cartilage, and other tissue elements. These benign tumors account for approximately 10–20% of all ovarian neoplasms.

While most dermoid cysts remain asymptomatic, larger cysts increase the risk of ovarian torsion due to their weight and mobility. Torsion is reported in approximately 15–20% of patients with ovarian dermoid cysts and represents a true surgical emergency.

Clinical Presentation

Patients with a torted ovarian dermoid cyst typically present with:

• Sudden onset severe lower abdominal pain
• Nausea and vomiting
• Pelvic tenderness
• Abdominal guarding
• Intermittent episodes of pain preceding acute torsion
• Low-grade fever in advanced cases

The pain is often unilateral and may mimic appendicitis, ectopic pregnancy, renal colic, or pelvic inflammatory disease.

Diagnostic Evaluation

Clinical Examination

A thorough gynecological and abdominal examination is performed to assess tenderness, guarding, and the presence of a pelvic mass.

Laboratory Investigations

• Complete blood count
• Pregnancy test
• Inflammatory markers
• Tumor markers when indicated

Imaging Studies

Ultrasonography

Pelvic ultrasound remains the first-line imaging modality. Characteristic findings include:

• Complex cystic ovarian mass
• Echogenic sebaceous material
• Calcifications
• Reduced or absent ovarian blood flow on Doppler imaging

Computed Tomography and MRI

These modalities may be used when ultrasound findings are inconclusive or when detailed anatomical assessment is required.

Indications for Surgical Intervention

Emergency laparoscopic surgery is indicated when:

• Ovarian torsion is suspected
• Persistent severe pain is present
• The cyst exceeds 5 cm in diameter
• There is concern for ovarian ischemia
• Complications such as rupture or infection occur

Early intervention improves the likelihood of ovarian preservation.

Surgical Technique

Patient Positioning and Preparation

The patient is placed in the lithotomy position under general anesthesia. Prophylactic antibiotics are administered, and the abdomen is prepared and draped in a sterile fashion.

Port Placement

A standard three- or four-port laparoscopic approach is utilized:

• 10-mm umbilical camera port
• Two or three accessory ports in the lower abdomen

Initial Exploration

Diagnostic laparoscopy reveals:

• Enlarged ovarian dermoid cyst
• Twisted ovarian pedicle
• Variable degrees of ovarian congestion, edema, or ischemia

The number of twists may range from one to several complete rotations.

Detorsion of the Ovary

The ovary is carefully untwisted using atraumatic graspers. Even ovaries that appear dark blue or ischemic should be preserved whenever possible, as ovarian function frequently recovers following restoration of blood flow.

Cyst Resection

After detorsion:

• The ovarian cortex is incised.
• The dermoid cyst is meticulously dissected from normal ovarian tissue.
• Care is taken to preserve healthy ovarian parenchyma.

Specimen Retrieval

The cyst is placed in an endoscopic retrieval bag before extraction to minimize spillage of sebaceous contents into the peritoneal cavity.

Peritoneal Irrigation

If spillage occurs, copious irrigation is performed to prevent chemical peritonitis and postoperative adhesions.

Hemostasis and Ovarian Reconstruction

Bleeding points are controlled using bipolar energy or fine suturing. The ovarian tissue is reconstructed whenever feasible to preserve fertility.

Advantages of Laparoscopic Resection

Compared with laparotomy, laparoscopy offers several benefits:

Enhanced Visualization

Magnified views allow precise identification of anatomical structures and meticulous tissue dissection.

Reduced Surgical Trauma

Smaller incisions result in less tissue damage and postoperative discomfort.

Faster Recovery

Most patients resume normal activities within a few days.

Better Cosmetic Outcomes

Tiny incisions leave minimal scarring.

Lower Risk of Adhesions

Reduced tissue handling decreases postoperative adhesion formation.

Preservation of Fertility

The minimally invasive approach facilitates ovarian conservation and maintenance of reproductive potential.

Postoperative Care

Patients are monitored for:

• Pain control
• Return of bowel function
• Signs of infection
• Recovery of ovarian function

Most patients can be discharged within 24 hours following uncomplicated surgery.

Follow-up ultrasound examinations may be performed to assess ovarian viability and detect recurrence.

Potential Complications

Although uncommon, complications may include:

• Bleeding
• Infection
• Injury to adjacent organs
• Chemical peritonitis from cyst spillage
• Adhesion formation
• Rare recurrence of dermoid cyst

Proper surgical technique significantly reduces these risks.

Fertility Considerations

Preservation of ovarian tissue is particularly important in young women and those desiring future pregnancy. Current evidence supports conservative surgery whenever possible, even when the ovary initially appears ischemic. Studies have demonstrated significant recovery of ovarian function after laparoscopic detorsion and cystectomy.

Conclusion

Laparoscopic resection of a torted ovarian dermoid cyst represents the gold standard treatment for this gynecological emergency. The procedure combines rapid diagnosis, effective management, and fertility preservation through a minimally invasive approach. Early recognition and timely surgical intervention are crucial for preventing ovarian loss and ensuring optimal patient outcomes. With advancements in laparoscopic techniques and instrumentation, surgeons can safely manage even complex cases while minimizing morbidity and promoting faster recovery.