The Journal of the American Association of Gynecologic Laparoscopists
Original ArticlesLateral Distribution of Ovarian Dermoid Cyst
Section snippets
Materials and Methods
We examined the medical records and database of all women who underwent surgical treatment of ovarian dermoid cyst at our institutions. Cyst diameter was assessed by ultrasound examination within 6 weeks before surgery. Data on operative findings consisted of written records, diagrams, and histopathology reports. Only patients with histopathologically confirmed, benign cystic teratomas were included.
Data collected were age of patients at time of surgery, and sites and sizes of ovarian cysts.
Results
Of 336 women (mean age 35.6 ± 0.9 yrs) with ovarian dermoid cysts, 83 were from Montreal and 253 were from Israel. In Montreal, this represented 58.9% of 141 patients with benign ovarian cysts. The main indication for surgery was persistent ovarian cyst. Table 1 shows distribution of cysts. Histopathologic examination revealed benign cystic teratoma in all patients.
Mean cyst diameter was 5.6 ± 2.1 cm. Cysts were present on the right side in 164 women (48.8%), on the left in 127 (37.8%), and
Discussion
No malignancy was encountered in these 336 women, consistent with the low risk of malignancy arising from dermoid cysts (<0.2%). Furthermore, the risk of malignant transformation typically is associated with dermoids cyst larger than 6 cm.4, 5 The reported risk of torsion (3.4%) is higher than the malignancy rate,6 but no woman in this series had ovarian torsion.
We encountered a right lateral predisposition of cysts. Previous studies in fewer patients also reported this tendency.2, 3 This is in
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