Prem P Batchala1, Pankaj Nepal2, Baphiralyne Wankhar3, Shanmugavel Chinnakaruppan4, Maneesh Khanna5, Vijayanadh Ojili6. 1. Department of Radiology and Medical Imaging, University of Virginia, 1215 Lee Street, Charlottesville, VA, 22908, USA. ppb2f@virginia.edu. 2. Department of Radiology, St. Vincent's Medical Center, Bridgeport, CT, 06606, USA. 3. Department of Radiology, North Eastern Indira Gandhi Regional Institute of Health and Medical Sciences, Mawdiangdiang, Shillong, Meghalaya, 793012, India. 4. Department of Clinical Imaging, Al Khor Hospital, Hamad Medical Corporation, P O Box 3050, Al Khor, Qatar. 5. Wollongong Diagnostics, 340 Crown Street, Wollongong, NSW, 2500, Australia. 6. Department of Radiology, University of Texas Health, San Antonio, TX, 78229, USA.
Abstract
PURPOSE: To look for the presence of "perifollicular rim sign" on non-contrast CT in surgically proven cases of ovarian or adnexal torsion. METHODS: A retrospective analysis of abdominopelvic non-contrast CT examinations in surgically proven cases of ovarian or adnexal torsion was conducted seeking the presence of "perifollicular rim sign" in torsed ovaries. "Perifollicular rim sign" was defined as a complete ring of perifollicular hyperdensity around ovarian follicles with an attenuation value of > 50 HU and thickness > 1-2 mm. A positive sign was equated to the presence of perifollicular hemorrhage. Pre-operative non-contrast CT was available in 7 out of the 39 ovarian or adnexal torsions included in our study. RESULTS: "Perifollicular rim sign" was present in 5 out of the 7 ovarian torsions on pre-operative non-contrast CT. MRI correlation was available in one patient. Ovarian enlargement (>4 cm) was present in all 7 cases. CONCLUSION: In an appropriate clinical setting, presence of "perifollicular rim sign" in an enlarged ovary on non-contrast CT examination can be considered a useful additional sign for ovarian torsion.
PURPOSE: To look for the presence of "perifollicular rim sign" on non-contrast CT in surgically proven cases of ovarian or adnexal torsion. METHODS: A retrospective analysis of abdominopelvic non-contrast CT examinations in surgically proven cases of ovarian or adnexal torsion was conducted seeking the presence of "perifollicular rim sign" in torsed ovaries. "Perifollicular rim sign" was defined as a complete ring of perifollicular hyperdensity around ovarian follicles with an attenuation value of > 50 HU and thickness > 1-2 mm. A positive sign was equated to the presence of perifollicular hemorrhage. Pre-operative non-contrast CT was available in 7 out of the 39 ovarian or adnexal torsions included in our study. RESULTS: "Perifollicular rim sign" was present in 5 out of the 7 ovarian torsions on pre-operative non-contrast CT. MRI correlation was available in one patient. Ovarian enlargement (>4 cm) was present in all 7 cases. CONCLUSION: In an appropriate clinical setting, presence of "perifollicular rim sign" in an enlarged ovary on non-contrast CT examination can be considered a useful additional sign for ovarian torsion.
Authors: Iva Petkovska; Eugene Duke; Diego R Martin; Zeenia Irani; Christopher P Geffre; Janiel M Cragun; James R Costello; Hina Arif-Tiwari; Ferenc Czeyda-Pommersheim; Unni Udayasankar; Bobby Kalb Journal: Eur J Radiol Date: 2016-09-23 Impact factor: 3.528
Authors: Sung E Rha; Jae Y Byun; Seung E Jung; Jung I Jung; Byung G Choi; Bum S Kim; Hyun Kim; Jae M Lee Journal: Radiographics Date: 2002 Mar-Apr Impact factor: 5.333
Authors: Priyadarshani R Bhosale; Marcia C Javitt; Mostafa Atri; Robert D Harris; Stella K Kang; Benjamin J Meyer; Pari V Pandharipande; Caroline Reinhold; Gloria M Salazar; Thomas D Shipp; Lynn Simpson; Betsy L Sussman; Jennifer Uyeda; Darci J Wall; Carolyn M Zelop; Phyllis Glanc Journal: Ultrasound Q Date: 2016-06 Impact factor: 1.657