Unconventional Removal of Dermoid Cyst Contents Using Dental Tools: A Case Report

Emily R. Pynn1*, Laura Power2

¹Northern Ontario School of Medicine University, Thunder Bay, Ontario, Canada
²Department of Obstetrics and Gynecology, Thunder Bay Regional Health Sciences Centre, Thunder Bay, ON

*Corresponding author

Emily R. Pynn, Northern Ontario School of Medicine University, Thunder Bay, Ontario, Canada
E-mail: epynn@nosm.ca

Abstract

Calcified structures are frequently found in ovarian dermoid cysts, which can make laparoscopic excision more challenging. We describe a 26-year-old lady who had four calcified teeth in her right ovarian dermoid cyst, one of which was too big for conventional extraction methods. After failed morcellation, sterilized dental forceps were used to remove the teeth individually, enabling successful laparoscopic cystectomy without the need for a larger incision. This case emphasizes the need of interdisciplinary tools in minimally invasive gynecologic surgery and presents an innovative surgical adaptation for handling the contents of calcified dermoid cysts.

Introduction

Dermoid cysts, also known as mature cystic teratomas, are common benign ovarian tumors typically seen in women of reproductive age. Numerous tissues, such as hair, sebaceous material, and calcified structures like teeth, can be found inside these cysts.1-3 The standard of treatment is laparoscopic cystectomy; however, the size, content, or location of the cyst may provide difficulties in the removal process. 4   In this case study, an innovative method for removing calcified teeth from a big dermoid cyst during laparoscopic surgery is presented, utilizing dental forceps.

Case Presentation

A 26-year-old nulliparous woman (G0P0) presented with intermittent, sharp, shooting pain in the right lower quadrant (RLQ) that occurred around twice a week for a year. Heat intolerance, bloating, weight gain, early satiety, dyspareunia, and night sweats were further symptoms. Other than having asthma and having had dental work done in the past, the patient denied having any notable medical or surgical history. She didn't smoke and had regular menstrual cycles.

Initial Imaging and Diagnosis: Transabdominal and transvaginal pelvic ultrasounds revealed:

  • A 78 × 47 × 65 mm multiseptated right adnexal cystic structure (O-RADS 3).
  • Normal left ovary, uterus, and no free fluid in the pelvis.

Figure 1A: Ultrasound image demonstrating normal anatomy.

A subsequent ultrasound demonstrated the cyst had grown to 93 × 50 × 88 mm, with internal vascularity (color score 2) and a hyperechoic, heterogeneous solid area consistent with a dermoid cyst. Serum β-hCG was negative.

Figure 1B: : Ultrasound of dermoid cyst showing echogenic nodules and shadowing

The size and features of the cyst, along with the patient's ongoing suffering, led to a referral for a laparoscopic right ovarian cystectomy.

Surgical Procedure: A 1 cm umbilical incision was made to gain laparoscopic access while the patient was in the lithotomy posture. A 12 mm laparoscopic port was used.  Three more 5 mm ports were positioned in the suprapubic area, LLQ, and RLQ. The following conclusions were observed:

  • A right ovarian dermoid cyst that has four calcified teeth (three small and one large), hair, and sebaceous material
  • Endometriosis affecting the uterosacral ligament and the right sidewall of the pelvis.
  • A small cyst on the left ovary and normal fallopian tubes.

The cyst was elevated from the pelvis using Trendelenburg positioning. A 1 cm incision was made on the ovarian serosa using laparoscopic scissors with monopolar cautery. The cyst capsule was carefully peeled away using retraction and blunt dissection. The dermoid cyst was placed in an endoscopic retrieval bag, but its calcified contents prevented morcellation, complicating its removal through the umbilical port.

 Innovative Approach: To address the challenge of removing the oversized teeth, the surgical team opted to use dental forceps—a tool designed for precision handling of calcified structures. While rarely employed in laparoscopic surgery, dental forceps were chosen for their fine, calibrated design, allowing for the controlled extraction of the cyst’s hardened contents without requiring a larger incision. Despite the unconventional nature of the tool, its fine design allowed for precise manipulation, minimizing damage to surrounding ovarian tissue.

The specimen was placed in a laparoscopic bag through the 12 mm port.  The port was removed, and the bag was pulled through the incision.  The soft tissue was easily extracted but the bony structures were difficult to remove.  Initially, kohker clamps were used to try to grasp the teeth and either morcellate them or removed them.  This proved difficult as the teeth were too hard to morcellate and would slip through the clamps if they encountered resistance at the umbilical incision.  Ring forceps were also used to grasp the teeth but again they could not successfully grasp the teeth, one of which was very large.  It became clear that specialized extraction forceps were required, and a dental tray was opened (Figure 2).  Using dental forceps, the teeth were successfully grasped, and 4 teeth were extracted (Figure 3). The controlled maneuvering of the forceps allowed the teeth to be extracted through the 1 cm incision without the need to extend it. The fascial incision was subsequently closed with 0 Vicryl sutures.

Figure 2: 76S Upper Roots Serrated Extraction Forceps used to extract the teeth from the ovarian dermoid cyst.

Figure 3: Extracted teeth from the ovarian dermoid cyst. The scale emphasizes their size and illustrates the technical challenge of removal.

Postoperative Course: The patient experienced mild swelling near the umbilicus postoperatively, which resolved without intervention. Pathological examination confirmed a mature cystic teratoma containing sebaceous material, hair, and four calcified teeth. Follow-up at six weeks revealed complete symptom resolution and no complications.

Discussion and Conclusion

Dermoid cysts, while benign, may present surgical challenges due to their calcified and heterogeneous contents. In this case, the large, calcified teeth posed difficulties during laparoscopic removal, necessitating an unconventional approach. The use of dental forceps highlights the importance of adaptability and interdisciplinary innovation in overcoming intraoperative obstacles.

Despite the fact that dental instruments are infrequently employed in laparoscopic operations, their utilization in this instance shows how cross-disciplinary solutions can be applied in surgical practice. The technique's success implies that dental tools could be useful supplements to minimally invasive surgery for calcified structures. Future research can examine the wider application of dental instruments in laparoscopic operations, especially in general and gynecological surgical contexts.

This case demonstrates how dental forceps can be successfully used in laparoscopic surgery to solve the particular difficulty of removing calcified teeth from a dermoid cyst. The strategy emphasizes how crucial innovation and flexibility are to surgical practice, especially in minimally invasive techniques. Surgeons can improve patient outcomes, reduce tissue damage, and increase precision by combining instruments from different medical specialties.

Acknowledgments: Informed consent was given by the patient for this case report to be published.

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