Browse > Article

Testicular Epidermoid Cyst on Diffusion-Weighted MR Imaging and ADC Map : A Case Report  

Kim, Mi-Sun (Department of Radiology, Ilsan Paik Hospital, Inje University College of Medicine)
Kim, Kyung-Ah (Department of Radiology, Yonsei University College of Medicine)
Chang, Sun-Hee (Department of Pathology, Ilsan Paik Hospital, Inje University College of Medicine)
Publication Information
Investigative Magnetic Resonance Imaging / v.15, no.2, 2011 , pp. 154-159 More about this Journal
Abstract
Testicular epidermoid cyst is a rare benign tumor, accounting for 1-2% of all testicular tumors. It can be cured by organ preserving surgery, so accurate preoperative diagnosis is very important for preventing unneccessary and extensive orchiectomy. We experienced a case of an 18-year-old man who presented with a painless lump in his right testis. The testicular mass showed an onion ring sign on ultrasonography. Computed tomography images showed the mass as a low attenuating lesion with curvilinear calcification. On Magnetic resonance imaging (MRI), the mass appeared as high signal intensity with internal alternating low signal intensity patterns on T2-weighted images. The mass was displayed as having homogeneous high signal intensity on diffusion magnetic resonance imaging and showed lower apparent diffusion coefficient values than normal testis parenchyma, similar to intracranial epidermoid cysts. Testicular MRI with DWI and ADC map can help to more accurately diagnose testicular epidermoid cyst.
Keywords
Epidermoid cyst; Testis; Diffusion weighted imaging; Magnetic resonance imaging (MRI);
Citations & Related Records
연도 인용수 순위
  • Reference
1 Cho JH, Chang JC, Park BH, Lee JG, Son CH. Sonographic and MR imaging findings of testicular epidermoid cysts. AJR Am J Roentgenol 2002;178:743-748
2 Saremi F, Knoll AN, Bendavid OJ, Schultze-Haakh H, Narula N, Sarlati F. Characterization of genitourinary lesions with diffusion-weighted imaging. Radiographics 2009;29:1295-1317   DOI   ScienceOn
3 Hakyemez B, Aksoy U, Yildiz H, Ergin N. Intracranial epidermoid cysts: diffusion-weighted, FLAIR and conventional MR findings. Eur J Radiol 2005;54:214-220   DOI   ScienceOn
4 Atchley JT, Dewbury KC. Ultrasound appearances of testicular epidermoid cysts. Clin Radiol 2000;55:493-502   DOI   ScienceOn
5 Langer JE, Ramchandani P, Siegelman ES, Banner MP. Epidermoid cysts of the testicle: sonographic and MR imaging features. AJR Am J Roentgenol 1999;173:1295-1299
6 Stein MM, Stein MW, Cohen BC, Li M, Koenigsberg M. Unusual sonographic appearance of an epidermoid cyst of the testis. J Ultrasound Med 1999;18:723-726
7 Maizlin ZV, Belenky A, Baniel J, Gottlieb P, Sandbank J, Strauss S. Epidermoid cyst and teratoma of the testis: sonographic and histologic similarities. J Ultrasound Med 2005;24:1403-1409; quiz 1410-1401
8 Chen C, Wu C, LIN W, Cheng W, Sun G, Chen C. Unusual MR imagings of an incidental testicular epidermoid Cyst: a case report. Chin J Radiol 2005;30:251-256
9 Yoshida T. MRI of testicular epidermoid cyst. Radiat Med 2004;22:354-356
10 Woodward PJ, Sohaey R, O'Donoghue MJ, Green DE. From the archives of the AFIP: tumors and tumorlike lesions of the testis: radiologic-pathologic correlation. Radiographics 2002;22:189-216