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  • Title: Ovarian torsion in prepubertal and pubertal girls: sonographic findings.
    Author: Stark JE, Siegel MJ.
    Journal: AJR Am J Roentgenol; 1994 Dec; 163(6):1479-82. PubMed ID: 7992751.
    Abstract:
    OBJECTIVE: The purpose of this study is to report the range of gray-scale and color Doppler findings of ovarian torsion in prepubertal and pubertal girls to determine whether there is a difference in appearance between the two age groups. MATERIALS AND METHODS: The study population consisted of 20 patients, 11 who were prepubertal (ages 2 days to 6 years) and nine who were pubertal (ages 12-16 years), who had gray-scale sonograms and surgical confirmation of ovarian torsion. Color Doppler studies were obtained in 14 of 20 patients. All sonograms were reviewed retrospectively by two radiologists with attention to location of the twisted ovary, internal characteristics, and evidence of color Doppler flow. The results were then compared in the prepubertal and pubertal groups. RESULTS: Sonographic findings of torsion in 11 prepubertal patients included complex mass with septations and debris (6/11), cystic mass (1/11), and solid mass with peripheral cysts (4/11). The masses were located in the right lower quadrant (5/11), left lower quadrant (3/11), right adnexa (2/11), and right inguinal canal (1/11). Eight of nine pubertal patients had solid masses, and one had a thick-walled cystic mass. Torsion involved the right ovary in nine patients and the left in 11. Color patterns included central flow (3/14), peripheral flow (6/14), and absence of flow (5/14) and did not correlate with age or gray-scale findings. CONCLUSION: Sonographic findings of ovarian torsion vary with age. Neonates and young children have extrapelvic cystic or complex cystic masses, whereas pubertal girls have predominantly solid masses in an adnexal location. In both groups of patients, color Doppler signal can be documented in many twisted ovaries.
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