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© 2005 by the American Institute of Ultrasound in Medicine
J Ultrasound Med 24:87-91 • 0278-4297

Torsed Appendix Testis

Gray Scale and Color Doppler Sonographic Findings Compared With Normal Appendix Testis

Dal Mo Yang, MD, Joo Won Lim, MD, Jee Eun Kim, MD, Ji Hye Kim, MD and Hyuni Cho, MD

Departments of Radiology (D.M.Y., J.E.K.) and Pathology (H.C.), Gachon Medical School Gil Medical Center, Incheon, Korea; Department of Radiology, Kyung Hee University Hospital, Seoul, Korea (J.W.L.); and Department of Radiology, Samsung Medical Center, Seoul, Korea (J.H.K.).

Address correspondence and reprint requests to Dal Mo Yang, MD, Department of Radiology, Gachon Medical School Gil Medical Center, 1198 Guwol-Dong, Namdong-Gu, Incheon 405-760, Korea. E-mail: dmyang{at}ghil.com

Objective. The purpose of this study was to compare the size, shape, echogenicity, and blood flow of the appendix testis on sonography in control subjects and in patients with a torsed appendix testis and to evaluate the usefulness as well as the limitations of these criteria. Methods. This was a retrospective analysis of 11 lesions with torsed appendix testes and 15 normal appendix testes in 12 children. The following gray scale and color Doppler sonographic features were analyzed: size, shape, echogenicity, and blood flow of the appendix testis. Results. The size of the appendix testis was larger in patients with a torsed appendix testis than in the control subjects (P < .05). A spherical shape of the appendix testis was more common in patients with a torsed appendix testis (P < .05). There was no blood flow within both the torsed and normal appendix testes. However, the frequency of increased periappendiceal blood flow was higher in patients with a torsed appendix testis (P < .05). There was no significant difference in the echogenicity between the torsed and normal appendix testes. Conclusions. Gray scale and color Doppler sonography may be helpful in the diagnosis of torsion of the appendix testis. A size of 5 mm or larger, spherical shape, and increased periappendiceal blood flow are indicative of a torsed appendix testis.

Key Words: appendix testis • Doppler sonography • sonography • torsion




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Copyright © 2005 by the American Institute of Ultrasound in Medicine.