Laparoscopic management of a giant mucinous benign ovarian mass weighing 10150 grams:A case report

BACKGROUND Giant ovarian cysts(≥15 cm in diameter)are rare.The size limit of cysts and the methodology for a safe and successful minimally invasive surgery has not been established.Here we report a case of a large 10-kg multi-locular ovarian mass,which was successfully laparoscopically removed:Our aim was to innovate the surgical practice in this field by providing a safe,effective,and minimally invasive management method for such complex and rare cases.CASE SUMMARY A 49-year-old nulliparous woman presented with abdominal distension,lasting from six Mo prior to admission;she reported worsening abdominal pain,abdominal swelling,and mild dyspnea.Imaging showed a presumed benign multi-locular(>10 locules)left ovarian cyst that measured about 30 cm in diameter.Based on the IOTA-ADNEX model the mass had a 27.5%risk of being a borderline or malignant tumor.The patient was successfully treated via a direct laparoscopic approach with salpingo-oophorectomy,followed by the external drainage of the cyst.Tumor spillage was successfully avoided during this procedure.The final volume of the drained mucinous content was 8950 L;the cyst wall,extracted through the minilaparotomy,weighed about 1200 g.The pathologic gross examination revealed a 24 cm×15 cm×10 cm mass;the histologic examination diagnosed a mucinous cystoadenoma.To our knowledge,this is the first case of a giant multi-locular ovarian cyst treated with a direct laparoscopy with salpingo-oophorectomy followed by external decompression.CONCLUSION Choosing the appropriate technique and surgeon skill are necessary for a safe and effective minimally-invasive approach of unique cases involving giant ovarian cysts.

Single Port Transumbilical Laparoscopic Surgery versus Conventional Laparoscopic Surgery for Benign Adnexal Masses： A Retrospective Study of Feasibility and Safety

Background： Single port laparoscopic surgery （SPLS） is an innovative approach that is rapidly gaining recognition worldwide. The aim of this study was to determine the feasibility and safety of SPLS compared to conventional laparoscopic surgery for the treatment of benign adnexal masses. Methods： In total, 99 patients who underwent SPLS for benign adnexal masses between December 2013 and March 2015 were compared to a nonrandomized control group comprising 104 conventional laparoscopic adnexal surgeries that were performed during the same period. We retrospectively analyzed multiple clinical characteristics and operative outcomes of all the patients, including age, body mass index, size and pathological type of ovarian mass, operative time, estimated blood loss （EBL）, duration of postoperative hospital stay, etc. Results： No significant difference was observed between the the pathological results between the two groups were found to two groups regarding preoperative baseline characteristics. However, be slightly different. The most common pathological type in the SPLS group was mature cystic teratoma, whereas endometrioma was more commonly seen in the control group. Otherwise, the two groups had comparable surgical outcomes, including the median operation time （51 min vs. 52 min, P = 0.909）, the median decreased level of hemoglobin from preoperation to postoperation day 3 （10 g/L vs. 10 g/L, P = 0.795）, and the median duration of postoperative hospital stay （3 days vs. 3 days, P = 0.168）. In SPLS groups, the median EBL and the anal exsufftation time were significantly less than those of the conventional group （5 ml vs. 10 ml, P〈 0.001; 10 h vs. 22 h, P〈 0.001）. Conclusions： SPLS is a feasible and safe approach for the treatment of benign adnexal masses. Further study is required to better determine whether SPLS has significant benefits compared to conventional techniques.