- Case Report
- Open Access
Small bowel incarceration in the umbilical artery following total laparoscopic radical hysterectomy
© Springer-Verlag 2009
- Received: 14 August 2009
- Accepted: 8 September 2009
- Published: 23 September 2009
Total laparoscopic radical hysterectomy (TLRH) has demonstrated to be a feasible and safe technique for patients affected of early cervical cancer. Small bowel obstruction resulting from a loop volvulus represents a very uncommon postoperative complication in gynecological laparoscopic surgery. We report a case of a patient who presented an intestinal obstruction following a TLRH for cervical cancer. The obstruction was caused by entrapment of a segment of small bowel under the dissected obliterated umbilical artery resulting in a loop incarceration. Wide radical pelvic dissection in radical hysterectomy usually leaves uncovered many dissected retroperitoneal structures. Postoperative bands and adhesions represent the main cause of bowel obstruction after a surgical procedure. Retroperitoneal vessel dissection is mandatory to achieve safely an adequate radicality, but it may lead to intestinal complications that should be taken into account. To our knowledge, this is the first report of postoperative bowel incarceration through the umbilical artery after a laparoscopic oncological procedure.
- Radical hysterectomy
- Small bowel incarceration
During the last decades, laparoscopy is being widely accepted for gynecological surgical procedures due to minimal trauma for the patient and quick recovery with results comparable to classical laparotomic techniques. Several studies in the recent literature have demonstrated that TLRH with pelvic and aortic lymph node dissection is a feasible technique for patients affected of early cervical cancer (stages Ia2–Ib1), with comparable results to the traditional laparotomic approach. Laparoscopic surgery offers the potential benefits of reduced discomfort, short hospital stay and convalescence, small abdominal scar, and low morbidity [1–4]. Most frequently reported postoperative complications after TLRH are bladder and rectal voiding dysfunction, urinary tract infection, thromboembolic events, urinary fistula, cuff abscess, pelvic lymphocyst, and abdominal wall hematoma [1–4].
Volvulus as a cause of small bowel obstruction represents a very uncommon postoperative complication in advanced gynecological laparoscopic surgery. Meanwhile, it is a rare but well recognized complication following total abdominal hysterectomy in the presence of adhesions [5, 6]. Injury to the peritoneum and peritoneal ischemia during surgery predisposes to the formation of adhesion and bands, which are the main causes of bowel obstruction after a surgical procedure. The estimated prevalence of intraabdominal adhesions after laparotomy is being reported to be as high as 95%. On the contrary, laparoscopic approach reduces the risk of postoperative adhesions, thus minimizing the incidence of complications related to this event [5, 6].
To our knowledge, this is the first reported case that describes small bowel obstruction due to a loop incarceration in the umbilical artery at the paravesical fossa after an oncological laparoscopic procedure. This case highlights one of the potential hazards of wide pelvic dissection, which is mandatory to achieve in order to obtain a proper radicality, but may lead to intestinal complications that should be taken into account.
A 40-year-old Caucasian nulligravid woman was referred to our cervical unit at Hospital Arnau de Vilanova (Valencia, Spain) for high-grade squamous intraepithelial lesion detected at a cytology exam. She was affected by Turner syndrome, and she did not have any previous surgery. Colposcopic examination of the cervix showed an abnormal pattern, and endocervical biopsy was positive for well-differentiated adenocarcinoma. She underwent cervical conization resulting in well-differentiated infiltrative adenocarcinoma. The MRI showed a cervical mass sized 2.2 × 1.7 cm with deep infiltration of the cervical wall and no infiltration of the parametrium. No lymph node metastases were detected. She was programmed for a piver type III  TLRH for Ib1 stage cervical cancer.
Small-bowel volvulus consists in an abnormal twisting of a loop of small bowel around the axis of its own mesentery, which produces a mechanical bowel obstruction. This process may also result in torsion and occlusion of the mesenteric vasculature, which can lead to bowel ischemia and final necrosis. Mortality for bowel volvulus has been estimated to be 9–35%, but this may increase up to 20–100% in cases of extended bowel necrosis .
Radical hysterectomy with bilateral lymphadenectomy represents one of the most important strategies in the treatment of cervical cancer, especially in early stages of the disease with small tumor volume. Nowadays, 5-year survival rates of patients with stage IB and IIA range between 87% and 92% .
During past 10 years, laparoscopic approach has become increasingly important in gynecologic surgery. Acceptance of a new surgical technique in oncology requires that technical feasibility is demonstrated and that the morbidity and survival rates are equal to classical surgical approach [2, 3]. In type III hysterectomy, a complete resection of the paracervix and uterosacral ligaments is performed and wide dissection and identification of structures at the retroperitoneum is mandatory in order to perform safe resection of the affected tissue. At our institution, a type III radicality is performed in cases of voluminous Ib1 cervical cancers measuring more than 2 cm.
Early and late postoperative complications in TLRH have been reported to range from 9% to 27%, being the most frequent ones, bladder dysfunction and urinary tract infection [1–3, 10]. Thromboembolic events, urinary fistula, cuff abscess, pelvic lymphocyst, and abdominal wall haematoma are infrequently reported (1–4%). Obermair et al reported one case in their large series of small bowel obstruction that occurred 3 years after initial surgery for cervical cancer . Intestinal complications are very infrequent after gynecological surgery and may be mainly due to the presence of postoperative adhesions [5, 6, 11]. Interestingly, Huntington et al reported a series of three cases of small bowel obstruction following laparoscopically assisted vaginal hysterectomy, resulting from extraneous retained staples used to divide the adnexa . Laparoscopic surgery results in less invasive approach to cervical cancer that reduces the risk of postoperative adhesion formation [5, 6, 13, 14]. Meanwhile dissection is usually more meticulous. and retroperitoneal structures are usually completely dissected and exposed to the abdominal structures. In the present case, an anatomical retroperitoneal structure, such as the obliterated umbilical artery, and not a band or adhesion was the origin of incarceration of the bowel.
Identification and dissection of the obliterated umbilical artery is important during the TLRH procedure as it is a fundamental landmark during the dissection of the lateral pelvic space . In addition, opening of the pararectal space is facilitated by the traction from the umbilical artery. Care must be taken if a tight and tense dissected umbilical artery is identified at the end of operation. In this situation, the section of the obliterated umbilical artery itself may avoid bowel incarceration, thus removing critical points, where a small bowel loop could wedge in. Meanwhile, surgical removal of retroperitoneal structures is only possible for nonfunctional structures, such as obliterated umbilical artery. Other options may be encountered to prevent this rare complication in any situation.
Postoperative adhesions might develop in up to 60–90% of patients undergoing gynecological surgery . After the present report, our main concern has been the possibility of bowel volvulus in retroperitoneal anatomical structures. Agents for adhesion prevention may create an absorbable barrier that facilitate the regeneration of the peritoneum and prevent this complication. Application of solid agents, such as oxygenized regenerated cellulose (Interceed™, Johnson&Johnson, USA) or membrane poly-D,L-lactide (PDLA), over the dissected retroperitoneal vascular structures might avoid mechanically the postoperative incarceration of the intestine. These barriers rapidly form a soft gelatinous mass that provides a protective coating around healing tissue during first days after application [13, 14]. Other liquid agents, such as 4% icodextrin solution (Adept, Shire GmbH and Co. KG) or Hyalobarrier (Baxter GmbH) may be useful in adhesion prevention but not as prevention of bowel incarceration .
In conclusion, in early cervical cancer, radical pelvic dissection is necessary in order to achieve a proper therapy. Even if small bowel incarceration represents a very rare event, the gynecological oncologist and the general surgeon must be aware of this possibility. It is important to take into account the possibility of late onset of the symptoms that might occur even after several weeks from radical pelvic surgery and the life-threatening risks of misdiagnosing this entity.
Conflict of interest
There is no actual or potential conflict of interest in relation to this article.
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