PT - JOURNAL ARTICLE AU - Koshiro Sugita AU - Takafumi Kawano AU - Mukai Motoi AU - Toshihiro Muraji AU - Shun Onishi AU - Tomoe Moriguchi AU - Koji Yamada AU - Waka Yamada AU - Ryuta Masuya AU - Seiro Machigashira AU - Kazuhiko Nakame AU - Tatsuru Kaji AU - Satoshi Ieiri TI - Analysis of the risk of ovarian torsion in 49 consecutive pediatric patients treated at a single institution AID - 10.1136/wjps-2018-000009 DP - 2019 Jun 01 TA - World Journal of Pediatric Surgery PG - e000009 VI - 2 IP - 2 4099 - http://wjps.bmj.com/content/2/2/e000009.short 4100 - http://wjps.bmj.com/content/2/2/e000009.full SO - World Jnl Ped Surgery2019 Jun 01; 2 AB - Purpose An early diagnosis of ovarian torsion is sometimes difficult due to variable clinical symptoms and non-specific imaging findings. We retrospectively reviewed patients with pediatric ovarian masses manifesting torsion.Methods Fifty-eight ovarian masses (55 episodes) in 49 non-neonatal patients treated from April 1984 to March 2017 were retrospectively analyzed. The Mann-Whitney U test and Fisher’s exact test were used for the statistical analysis.Results The median age of these 55 episodes was 10.5 years old (range 1.0–23.0). Thirty-three patients presented with abdominal pain. Forty-five tumors and 13 cystic masses were resected and diagnosed pathologically (50 benign and 8 malignant). Torsion was identified in 15 cases (25.9%) at operation. The torsion masses were all benign, and 8 ovaries (53.3%) were successfully preserved. Comparing the torsion cases with the non-torsion cases, only the white cell count was significantly higher in the torsion cases (p=0.0133) and in the patients presented with abdominal pain (p=0.0068). The duration of abdominal pain was significantly shorter in ovary preserved cases than in oophorectomy cases.Conclusion The white blood cell may be a helpful indicator of the presence of torsion as well as the need for surgery.